Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
20250508 56 Duplainville Rd Regeneron Site Plan SWPPP
Stormwater Pollution Prevention Plan Prepared in accordance with NYS DEC General Permit GP-0-25-001 for: Regeneron Guard House Owner/Operator: Regeneron Pharmaceuticals, Inc. 1 Global View Troy, NY 12180 SWPPP Contact: The LA Group, PC 40 Long Alley Saratoga Springs, NY 12866 (518) 587-8100 SWPPP Preparation Date: June 10, 2025 Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Table of Contents 1.0 PERMIT OVERVIEW AND REQUIREMENTS ..................................................................... 4 1.1 PERMIT OVERVIEW ................................................................................................................................... 4 2.0 SWPPP REVIEW, UPDATE ....................................................................................................... 4 2.1 SWPPP REVIEW ....................................................................................................................................... 4 2.2 SWPPP UPDATES/AMENDMENTS ............................................................................................................. 5 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING ....................................................... 5 3.1 PROJECT DESCRIPTION ............................................................................................................................. 5 3.2 PRE-DEVELOPMENT CONDITIONS ............................................................................................................ 6 3.3 PROJECT TYPE .......................................................................................................................................... 6 4.0 EROSION AND SEDIMENT CONTROL ................................................................................. 7 4.1 EROSION AND SEDIMENT CONTROL PRACTICES ...................................................................................... 7 4.2 EROSION AND SEDIMENT CONTROL DRAWINGS ...................................................................................... 7 4.3 CONSTRUCTION SEQUENCE OF OPERATIONS............................................................................................ 7 4.4 EROSION AND SEDIMENT CONTROL PRACTICE MAINTENANCE ............................................................... 8 4.5 EROSION AND SEDIMENT CONTROL INSPECTIONS ................................................................................... 9 4.6 CONTRACTOR SEQUENCE FORM ............................................................................................................. 10 4.7 SPILL PREVENTION PRACTICES .............................................................................................................. 11 4.8 CONSTRUCTION WASTE .......................................................................................................................... 14 4.9 OFFSITE VEHICLE TRACKING ................................................................................................................. 14 4.10 TEMPORARY STABILIZATION FOR FROZEN CONDITIONS ....................................................................... 14 5.0 POST CONSTRUCTION STORMWATER MANAGEMENT DESIGN ............................ 15 5.1 HYDRAULIC AND HYDROLOGIC ANALYSIS ............................................................................................ 15 5.2 NYSDEC DESIGN CRITERIA .................................................................................................................. 16 5.3 CURVE NUMBER AND RAINFALL DATA .................................................................................................. 16 5.4 EXISTING CONDITION ............................................................................................................................. 16 5.5 PROPOSED CONDITION ............................................................................................................................ 16 5.6 PROPOSED STORMWATER FACILITY ....................................................................................................... 17 5.7 PRETREATMENT ...................................................................................................................................... 17 5.8 TREATMENT ............................................................................................................................................ 17 5.9 WATER QUALITY VOLUME (WQV) ........................................................................................................ 17 5.10 RUNOFF REDUCTION VOLUME (RRV) .................................................................................................... 18 5.11 CHANNEL PROTECTION VOLUME (CPV) ................................................................................................ 18 5.12 OVERBANK FLOOD (QP) AND EXTREME FLOOD (QF) ATTENUATION .................................................... 19 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE ............................................ 19 6.1 MAINTENANCE TO BE PERFORMED ........................................................................................................ 19 7.0 CONSTRUCTION WASTE ...................................................................................................... 20 8.0 OFFSITE VEHICLE TRACKING ........................................................................................... 20 9.0 SOIL RESTORATION .............................................................................................................. 20 10.0 SPILL PREVENTION PRACTICES ....................................................................................... 21 11.0 CERTIFICATIONS .................................................................................................................... 25 12.0 DEFINITIONS ............................................................................................................................ 30 Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Appendices A Notice of Intent (NOI) & MS4 Acceptance Form B Existing Conditions Watershed Map and HydroCAD Calculations C Proposed Conditions Watershed Map and HydroCAD Calculations D Storm Data E NRCS Web Soil Survey and Soil Investigations F Map Set – Location Map and Construction Drawing G SWPPP Inspection Forms –SWPPP Inspection Report H Other SWPPP Forms – Construction Sequence, SWPPP Plan Changes, Spill Response Form, Stormwater Management Practice Maintenance Log I SPDES General Permit GP-0-25-001 J Historic Preservation/Endangered Species Documentation K Deep Ripping and De-compaction (DEC, 2008) Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 4 1.0 PERMIT OVERVIEW AND REQUIREMENTS 1.1 Permit Overview This Stormwater Pollution Prevention Plan (SWPPP) is prepared to inform the landowner and construction personnel of the measures to be implemented for controlling runoff and pollutants from the site during and after construction activities. The objective of this plan is to comply with the New York Department of Environmental Conservation (NYSDEC) State Pollutant Discharge Elimination System (SPDES) General Permit for Stormwater Discharges from Construction Activities, Permit No. GP-0-25-001 requirements. Any material conflicts between this plan and the site plans, specification or instructions, must be brought to the attention of the design professional. The project may have other permits and it is the responsibility of the owner and contractor to know and understand all permits. The operator will be issued a bill from New York State for a one hundred and ten dollar ($110.00) annual fee for the open GP-0-25-001 permit. The operator will also be billed by New York State for a one time one hundred and ten dollar ($110.00) per acre fee for the proposed disturbed soil area listed in the NOI, and finally a one time six hundred and seventy five ($675.00) per acre fee for the proposed increased impervious area listed in the NOI. The operator is responsible to maintain onsite in a secure location that is accessible during normal working hours to an individual performing a compliance inspection, the following information: ✓ the Notice of Intent (NOI), ✓ the NYS Department of Environmental Conservation NOI Acknowledgement Letter, ✓ the SWPPP, ✓ a copy of the General Permit (included in the SWPPP), ✓ MS4 SWPPP Acceptance Form (where applicable), and ✓ all inspection reports. Technical standards are detailed in the “New York State Standards and Specifications for Sediment and Erosion and Sediment Control (November 2016)”, as well as illustrated on the Construction Drawings included in Appendix F. The design of post-construction stormwater control practices follows the guidance provided by “New York State Stormwater Management Design Manual.” 2.0 SWPPP REVIEW, UPDATE 2.1 SWPPP Review Applicable Federal, State, and local regulatory agencies that have jurisdiction may elect to review this SWPPP and notify the permittee in writing that the SWPPP does not meet the requirements of their regulations. If the SWPPP needs to be revised, the permittee and the site contractor will make the required modifications within seven Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 5 days of such notification and submit a written certification to the notifying agency that the changes have been implemented. A copy of the SWPPP will be kept available on site for review by regulatory agencies, engineers, and subcontractors. This Project is in the City of Saratoga Springs, which is a regulated MS4 Community, so a copy of this SWPPP was sent to the City for review. A copy of the signed MS4 Acceptance form is provided in Appendix A of this SWPPP. 2.2 SWPPP Updates/Amendments The permittee identified in this SWPPP shall amend the SWPPP under the following conditions: ✓ Whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharge from the site, ✓ Whenever there is a change in design, construction or operation that could have an effect on the discharge of pollutants, ✓ To address issues or deficiencies identified during an inspection by the qualified inspector, the Department or other regulatory authority, ✓ To identify a new subcontractor that will implement any part of the SWPPP, and ✓ To document the final construction conditions. If modifications are required to the post-stormwater management practices and the Project is within a regulated, traditional land use control MS4, the owner or operator of the Project must notify the MS4 in writing of any planned amendments or modifications to the post-construction stormwater management practice component of the SWPPP. Unless otherwise notified by the MS4, the owner or operator shall have the SWPPP amendments or modifications reviewed and accepted by the MS4 prior to commencing construction of the post-construction stormwater management practice. The SWPPP PLAN CHANGES, AUTHORIZATION, AND CHANGE CERTIFICATION form (Appendix H) must be filled out and a copy retained onsite during construction. If modifications are required to the post-stormwater management practices and the Project is not within a Regulated, Traditional Land Use Control MS4, the changes shall be documented in the SWPPP kept onsite. 3.0 SITE ASSESSMENT, EVALUATION AND PLANNING 3.1 Project Description The Project described in this SWPPP is located at Regeneron Pharmaceuticals, in Saratoga Springs, NY. This project proposes to construct a new guard house along Marsel Drive off of Adams Drive. See Appendix F for a general site location map and proposed plan. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 6 3.2 Pre-Development Conditions The proposed area of work is located on a relatively flat terrain that is currently forested with coniferous and deciduous species and has an existing drive. 3.3 Project Type This Project is a new development project and has been designed in accordance with Chapter 4 and Chapter 9 of the 2024 NYSDEC Stormwater Management Design Manual for construction activities. The introduction of new impervious surface requires erosion and sediment control and post-construction stormwater management practices. 3.4 Project Scope The construction of a new drive entrance and guard house will disturb approximately 1.29 acres. 3.4 Wetlands, Surface Waters and Hydrology Surface runoff generally flows west across the proposed project area. The runoff eventually discharges into existing storm infrastructure on the property. 3.5 Soils Two test pits were dug to confirm subsurface soil conditions. Detailed results are included in Appendix E. In general, on site soils are consistent with Windsor Loamy Sand, New York Hydrologic Group A. No bedrock or groundwater was encountered during investigations. Two falling head infiltration tests were performed in two locations and the rate observed was greater than 120” per hour. The Soils Reports can be found in Appendix E. 3.6 Cultural Resources and Natural Heritage Program Determinations A review of the Cultural Resource Information System (CRIS) shows the Project is within an archaeological sensitive area.The NYSDEC Environmental Resource Mapper shows that this project is within an area of significant natural communities, or rare plants or animals. The project is proposed at an existing site and in the vicinity of an existing drive. The project is currently going through site plan review and SEQR and it is anticipated that there will be no effect on both archeological or environmental resources. Refer to Appendix J for correspondence from both NYS OPRHP and NYS DEC. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 7 4.0 EROSION AND SEDIMENT CONTROL 4.1 Erosion and Sediment Control Practices See the SWPPP plan set for details regarding the Sediment and Erosion Control Practices. Temporary Structural Practices ✓ Silt Fence ✓ Stabilized Construction Access Permanent Structural Controls ✓ Stone Outlet Protection Temporary Stabilization Practices (including vegetative practices) ✓ Stabilization shall be initiated by the end of the next business day and be completed within 14 days. Permanent Stabilization Practices (including vegetative practices) ✓ Seed and mulch all disturbed areas. Slopes that are 3:1 or steeper should receive a Rolled Erosion Control Product (RECP), sodding, and or hydro- seeding a homogenous mixture of wood fiber mulch with tackifying agent. Refer to the SWPPP Plan Set in Appendix F for detailed information on each practice. 4.2 Erosion and Sediment Control Drawings Erosion and Sediment Control measures are included in the SWPPP Plan Set in Appendix F. 4.3 Construction Sequence of Operations. The project will not disturb more than 5 acres. ✓ Temporary structural erosion controls will be installed prior to earthwork as per the attached plans. ✓ Areas to be undisturbed for more than 14 days will be temporarily stabilized by seeding. ✓ Disturbed areas will be reseeded and mulched immediately after final contours are re-established and no more than 14 days after the completion of construction at that site. ✓ Temporary erosion control devices will not be removed until the area served is stabilized by the growth of vegetation and the area is certified as being stabilized by the Erosion Control Superintendent. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 8 Construction Activities Sequence must include major items such as, but not limited to, clearing and grubbing, excavation and grading, utility and infrastructure installation and any other activity resulting in soil disturbance. Include installation of erosion and sediment control practices and timing of installation. Install silt fence and construction entrance Demo buildings, clear site and rough grade Utility installation Begin parking, playground, and walk installation Begin building construction Monitor/maintain erosion and sediment control measures Remove erosion and sediment control measures upon stabilization of contributing areas 4.4 Erosion and Sediment Control Practice Maintenance Temporary erosion and sediment control practices shall be maintained frequently during construction. It is the responsibility of the operator to inspect and maintain the temporary controls so that they are working efficiently. The operator shall pay close attention to SWPPP Inspection Reports that advise corrective measures. Captured sediment will have to be removed periodically from each practice for the practice to function properly. Temporary erosion and sediment control practice maintenance needs are listed below: ✓ Silt fence – maintenance shall be performed as needed and material removed when “bulges” develop in the silt fence. ✓ Stabilized construction access – access shall be maintained in a condition which shall prevent tracking. This may require periodic top dressing with additional aggregate. All sediment tracked onto or spilled on public rights of way shall be removed immediately. When necessary, wheels must be cleaned to remove sediment prior to entrance on public rights of way. When washing is required, it shall be done in an area stabilized with Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 9 aggregate and wash water shall be directed away from streams or wetlands preferably to a broad grassed area or a stormwater pond. ✓ Mulch and seed: replace/repair seed and mulch where seeding has been disturbed. ✓ Rock outlet protection – once a riprap outlet has been installed, the maintenance needs are very low. It should be inspected after high flows for evidence of scour beneath the riprap. Repair should be immediate. 4.5 Erosion and Sediment Control Inspections A Trained Contractor is responsible for daily inspections of erosion and sediment control practices to ensure that they are being maintained in effective operating condition at all times. ▪ A trained contractor shall be an employee from the contracting company responsible for the implementation of the SWPPP. This person must be onsite when any soil disturbing activities are being conducted. The trained contractor must have received 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the qualified inspector shall receive 4 hours of training every 3 years. This trained contractor cannot conduct the regular SWPPP compliance inspections unless they meet the qualified inspector qualifications. A Qualified Inspector will perform regular inspections per the schedules below and will be responsible for documenting any deficiencies and the repairs thereof. ▪ A qualified inspector shall conduct an assessment of the site prior to the commencement of construction and certify in an inspection report that the appropriate erosion and sediment controls described in the SWPPP and required by GP-0-25-001 have been adequately installed to ensure overall preparedness of the site for commencement of construction. ▪ This qualified inspector must be a Licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received 4 hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the qualified inspector shall receive 4 hours of training every 3 years. ▪ The qualified inspector (as defined by the NYS DEC SPDES regulations) shall make at least one inspection every seven (7) calendar days of erosion control devices and ongoing soil disturbance activities during construction. When more than five (5) acres of soil is disturbed at any Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 10 one time the qualified inspector will make at least two inspections every seven (7) calendar days, with each inspection separated by a minimum of two (2) full calendar days ▪ A maintenance inspection report will be completed by the qualified inspector after each inspection. The report form to be completed by the inspector is attached in Appendix G. Reports should be compiled and maintained on-site in the SWPPP 3-ring binder. ▪ For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the qualified inspector shall conduct a site inspection at least once every thirty (30) calendar days. ▪ For construction sites where soil disturbance activities have been shut down with partial project completion, the qualified inspector may stop conducting inspections, if all areas disturbed as of the project shutdown date have achieved final stabilization and all post- construction stormwater management practices required for the completed portion of the project have been constructed in conformance with the individual project SWPPP and are operational. ▪ The qualified inspector shall contact the owner/operator at the conclusion of each inspection and inform the owner/operator that a new inspection report has been placed in the SWPPP. It is the contractor’s and the owner/operator’s responsibility to address action items identified in the qualified inspector’s inspection reports in a timely manner. ▪ All measures shall be maintained in good working order; if repair is necessary, it shall be initiated within 24 hours of report. The qualified inspector shall take photographs of any needed repairs and also photograph when the repairs are completed. These photographs will be time and date stamped and attached to the weekly inspection report. ▪ Seeded and planted areas shall be inspected for bare spots, washouts, and healthy growth. If necessary, spot reseeding or sodding shall be implemented. 4.6 Contractor Sequence Form The contractor shall prepare a summary of construction status using the Construction Sequence Form (included in Appendix H) once every month. Significant deviations to the sequence and reasons for those deviations (i.e. weather, subcontractor availability, etc.), shall be noted by the contractor. The schedule shall be used to record the dates for initiation of construction, implementation of erosion control Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 11 measures, stabilization, etc. A copy of this table shall be maintained at the construction site and updated. 4.7 Spill Prevention Practices Good Housekeeping and Material Management Practices The following good housekeeping and material management practices will be followed on site during the construction project to reduce the risk of spills or other accidental exposure of materials and substances to stormwater runoff. ▪ Materials will be brought on site in the minimum quantities required. ▪ All materials stored on site will be stored in a neat, orderly manner in their appropriate containers, and if possible, under a roof or other enclosure. ▪ Products will be kept in their original containers with the original manufacturer’s label. ▪ Substances will not be mixed with one another unless recommended by the manufacturer. ▪ Whenever possible, all of a product will be used up before disposal. ▪ Manufacturer’s recommendations for proper use and disposal will be followed. ▪ The construction manager or his designee will inspect regularly to ensure proper use and disposal of materials on site. ▪ The contractor shall prohibit washing of tools, equipment, and machinery in or within 100 feet of any watercourse or wetland. ▪ All above grade storage tanks are to be protected from vehicle damage by temporary barriers. Inventory for Pollution Prevention Plan The materials and substances listed below are expected to be on-site during construction. ▪ Petroleum for fueling vehicles will be stored in above ground storage tanks. Tanks will either be steel with an enclosure capable of holding 110% of the storage tank volume or of a Con-Store, concrete encased type typically employed by NYSDOT. Hydraulic oil and other oils will be stored in their original containers. Concrete and asphalt will be stored in the original delivery trucks. ▪ Fertilizer may be stored on site in its original container for a short period of time prior to seeding. Original containers will be safely piled on pallets or similar devices to protect from moisture. ▪ Paints and other similar materials will be stored in their original containers and all empty containers will be disposed of in accordance with label directions. ▪ Portable sanitary facilities, which contain chemical disinfectants (deodorants) will be located on-site, with the disinfectants held in the tank of the toilet. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 12 Hazardous Products These practices are used to reduce the risks associated with hazardous materials. ▪ Products will be kept in original containers unless they are not re-sealable. ▪ Original labels and material safety data sheets will be retained; they contain important product information. ▪ If surplus product must be disposed of, manufacturers’ or local and State recommended methods for proper disposal will be followed. Spill Prevention The following product specific practices will be followed on site. Petroleum Products: ▪ Construction personnel should be made aware that emergency telephone numbers are located in this SWPPP. ▪ The contractor shall immediately contact NYSDEC in the event of a spill, and shall take all appropriate steps to contain the spill, including construction of a dike around the spill and placing absorbent material over this spill. ▪ The contractor shall instruct personnel that spillage of fuels, oils, and similar chemicals must be avoided and will have arranged with a qualified spill remediation company to serve the site. ▪ Fuels, oils, and chemicals will be stored in appropriate and tightly capped containers. Containers shall not be disposed of on the project site. ▪ Fuels, oils, chemicals, material, equipment, and sanitary facilities will be stored/located away from trees and at least 100 feet from streams, wells, wet areas, and other environmentally sensitive sites. ▪ Dispose of chemical containers and surplus chemicals off the project site in accordance with label directions. ▪ Use tight connections and hoses with appropriate nozzles in all operations involving fuels, lubricating materials or chemicals. ▪ Use funnels when pouring fuels, lubricating materials or chemicals. ▪ Refueling and cleaning of construction equipment will take place in parking areas to provide rapid response to emergency situations. ▪ All on-site vehicles will be monitored for leaks and receive regular preventative maintenance to reduce the chance of leakage. Any vehicle leaking fuel or hydraulic fuel will be immediately scheduled for repairs and use will be discontinued until repairs are made. Fertilizers: ▪ Fertilizer will be stored in its original containers on pallets with water resistant coverings. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 13 ▪ Proper delivery scheduling will minimize storage time. ▪ Any damaged containers will be repaired immediately upon discovery and any released fertilizer recovered to the fullest extent practicable. Paints: ▪ All containers will be tightly sealed and stored when not required for use. ▪ Excess paint will not be discharged to the storm water system or wastewater system, but will be properly disposed of according to manufacturers’ instructions or State and local regulations. Concrete Trucks: ▪ Concrete trucks will be allowed to wash out or discharge surplus concrete or drum wash water only at designated locations on site. Asphalt Trucks: ▪ Asphalt trucks shall not discharge surplus asphalt on the site. Spill Control Practices In addition to the good housekeeping and material management practices discussed in the previous sections of this plan, the following practices will be followed for spill prevention and cleanup. The construction manager or site superintendent responsible for the day-to-day site operations will be the spill prevention and cleanup coordinator. He will designate at least three other site personnel who will receive spill prevention and cleanup training. These individuals will each become responsible for a particular phase of prevention and cleanup. The names of responsible spill personnel will be posted in the material storage area and in the onsite construction office or trailer. ▪ Manufacturers’ recommended methods for spill cleanup will be clearly posted and site personnel will be made aware of the procedures and the location of the information and cleanup supplies. Any spill in excess or suspected to be in excess of two gallons will be reported to the NYSDEC Regional Spill Response Unit. Notification to the NYSDEC (1-800-457- 7362) must be completed within two hours of the discovery of the spill. ▪ Materials and equipment necessary for spill cleanup will be kept in the material storage area onsite. Equipment and materials will include but not be limited to absorbent pads, brooms, dust pans, mops, rags, gloves, goggles, activated clay, sand, sawdust, and plastic and metal trash containers specifically for this purpose. ▪ All spills will be cleaned up immediately after discovery. ▪ The spill area will be kept well ventilated and personnel will wear appropriate protective clothing to prevent injury from contact with spilled substance. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 14 ▪ Spills of toxic or hazardous material will be reported to the appropriate State or local government agency, regardless of the size. 4.8 Construction Waste Waste Materials: All waste materials generated during construction will be disposed at a suitable landfill, or transfer station. Hazardous Waste: The project will not be a generator of hazardous waste and it is not anticipated that any hazardous waste will be generated during construction. If there are any materials generated, a licensed hazardous waste carrier will be contracted to dispose the hazardous material at a suitable disposal site. If hazardous materials are discovered during construction, the work will be stopped until the issue is resolved. Waste: Portable sanitary facilities will be made available to construction personnel and will be serviced regularly. 4.9 Offsite Vehicle Tracking Excavation equipment involved with the construction will remain on the project site and will not regularly egress or ingress the site. Any trucks used to bring in materials or remove materials via municipal paved roads will do so over a stabilized construction entrance. If any off-site vehicle tracking occurs, the contractor will be directed to initiate, street sweeping program in the immediate vicinity of the site. 4.10 Temporary Stabilization for Frozen Conditions The following temporary stabilization measures MUST be performed when construction is occurring during winter/frozen ground conditions. The following requirements do not supercede any other requirements of this SWPPP as they apply to non-frozen ground conditions. ▪ Perimeter erosion control MUST still be installed prior to earthwork disturbance as per this SWPPP. ▪ Any areas that cannot be seeded to turf by October 1 or earlier will receive a temporary seeding. The temporary seeding will consist of winter rye seeded at the rate of 120 pounds per acre (2.5 pounds per 1,000 square feet) or stabilized as per the temporary stabilization for winter construction/frozen conditions. ▪ Any area of disturbance that will remain inactive for a period of 14 consecutive days MUST be mulched. This includes any previously disturbed areas that are covered with snow. ▪ Mulch MUST consist of loose straw applied at the rate of 2 to 3 bales (90 to 100 pounds) per thousand square feet. ▪ Mulch MUST be applied uniformly over the area of bare soil or bare soil that is covered with snow. For the latter condition, mulch MUST be applied on top of snow. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 15 ▪ Using a tracked vehicle, mulch MUST be crimped into the bare soil/snow. The tracked vehicle MUST be driven across the mulched areas in at least two directions to maximize crimping of mulch into the soil/snow. ▪ If mulch gets blown off an area to a significant degree, the site inspector WILL require that an area be re-mulched in accordance with Items 2 through 5 above, and this area WILL be included on the inspection checklist for the next inspection. ▪ If a particular area repeatedly experiences loss of mulch due to wind, then the inspector WILL require that an alternative method be used to secure the mulch in place. Such alternatives may include the use of netting, tackifier or other methods deemed appropriate by the inspector. ▪ During periods when snow is melting and/or surface soils are thawing during daytime hours, mulched areas MUST be re-tracked (crimped) as per Item 5 above at least once every seven days, more frequently if directed by the inspector. Additional mulch may be required to obtain complete coverage of an area. Biodegradable erosion control matting may be required on steeper slopes. ▪ Additional stabilization measures for non-frozen ground conditions described in this SWPPP WILL be implemented at the time deemed appropriate by the inspector. During the winter season, if a site has been stabilized and soil disturbing activities have been suspended for the winter, weekly inspections can be suspended. However, monthly inspections must still be conducted. All normal weekly inspections must resume when soil disturbing activities resume. 5.0 POST CONSTRUCTION STORMWATER MANAGEMENT DESIGN 5.1 Hydraulic and Hydrologic Analysis The program utilized for quantifying stormwater runoff rates and volumes was HydroCAD software, produced by Applied Microcomputer Systems of Chocorua, NH. The SCS 24-hour Type II design storms for 1, 10, and 100-year frequency rainfall were analyzed. ✓ Hydrologic/hydraulic analysis for all structural components of the stormwater control system for the applicable design storms (see Appendix B And C). ✓ Comparison of post-development stormwater runoff conditions with pre- development conditions (see Appendix B and C). ✓ Dimensions, material specifications and installation details for each post- construction stormwater control practice (see Appendix F). Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 16 5.2 NYSDEC Design Criteria The New York State Stormwater Management Design Manual dated July 2024 (The Manual) has been utilized to develop the stormwater management plan. Attachment D contains detailed calculations for determining and summarizing the required and provided volumes for Water Quality and Runoff Reduction. In general, the required design criteria (WQv and RRv) were calculated for all areas where site disturbance or green infrastructure techniques are proposed. 5.3 Curve Number and Rainfall Data The surface cover for the project area is a mixture of grass, woods, and impervious areas. The curve numbers utilized in the modeling were assigned based on cover type and HSG soil classification. The design storms used for pre-development versus post-development comparison were the 1, 10, and 100-year, 24-hour duration, SCS Type II events. The rainfall amounts for these storms, according to NRCC and NRCS, are 2.22, 3.70, and 6.15 inches, respectively. 5.4 Existing Condition The Project area’s existing condition, for which this stormwater management plan is based, consists of grass, wooded areas and an existing entrance drive. Under the watershed’s Existing Condition, the majority of the site runoff flows west as sheet flow through the site, eventually making its way into existing storm infrastructure on site. The existing low area northwest of the project site is used as the analysis point and has been labeled Analysis Point 1 (AP-1) for the purposes of this study. A small portion of the site flows to existing storm structures south of the project area. This analysis point has been labeled Analysis Point 2 (AP-2) for the purposes of this study. AP-1 and AP-2 were utilized in comparing all pre- versus post-runoff conditions. Refer to drawing “W-1 Existing Conditions Watershed Map,” located in Appendix B for more information and existing conditions watershed modeling. 5.5 Proposed Condition In the proposed condition, all stormwater from the Project area will continue to discharge to the same points as in the Existing Condition (AP-1 and AP-2). The flow patterns through the watershed have roughly remained unchanged, as is shown on the drawing “W-2 Proposed Conditions Watershed Map” contained in Appendix C. To meet NYSDEC requirements (see Section 5.2 NYSDEC Design Criteria of this report) an Infiltration Basin was incorporated into the stormwater management design to mitigate the quality and quantity of stormwater runoff discharged from the Project Site. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 17 5.6 Proposed Stormwater Facility The Project is proposing the construction of an infiltration basin (SMP-1). The stormwater management facilities are indicated on the watershed map (W2) and construction plans. 5.7 Pretreatment Pretreatment for the water discharging into SMP-1 is provided via sediment forebays. The northern forebay for SMP-1 is sized to hold 537 cf which is more than the required 50% of the WQv entering the forebay. The southern forebay for SMP-1 is sized to hold 1,548 cf which is more than the required 50% of the WQv entering the forebay. 5.8 Treatment Treatment for the water discharging into SMP-1 is provided via infiltration into the underlying soils. 5.9 Water Quality Volume (WQv) The Water Quality Volume (WQv) requirement is designed to improve water quality sizing to capture and treat 90% of the average annual stormwater runoff volumes. The WQv is directly related to the amount of impervious cover created at a site. The followin g equation is used to determine the water quality storage volume. WQv = (P)(Rv)(A) 12 Where: WQv = Water quality volume (acre/feet) P = 90% Rainfall Event (1.15” for Saratoga Springs) Rv = 0.05 + 0.009(I) where I is percent impervious cover A = Site area in acres The required WQv will be provided by an infiltration basin in accordance with the SWMDM. The total required WQv for the project is 0.049 ac-ft. Refer to Table 5-1 for a summary of the provided water quality volumes for the Project. Refer to Appendix D for detailed WQv calculations. Table 5-1 Water Quality Volume (WQv) Summary SMP Type Provided (ac-ft) SMP-1 Infiltration Basin 0.080 TOTAL 0.080 Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 18 5.10 Runoff Reduction Volume (RRv) Section 4.4 of the Manual states, “Runoff reduction shall be achieved by infiltration, groundwater recharge, reuse, recycle, evaporation/evapotranspiration of 100 percent of the post-development water quality volume. The goal of runoff reduction is to replicate pre-development hydrology by maintaining pre-construction infiltration, peak runoff flow, and discharge volume, as well as minimizing concentrated flow, by application of practices that provide source control treatment in a distributed manner before runoff reaches the collection system.” The Project achieves the required runoff reduction utilizing green infrastructure and stormwater management practices with RRv capabilities throughout the project. Table 5-2 for a summary of the runoff reduction volumes provided for each green infrastructure practice. Refer to Appendix D for detailed RRv calculations. Table 5-2 Runoff Reduction Volume (RRv) Summary SMP Provided (unit) 5.3.1 Conservation of Natural Areas - 5.3.2 Sheetflow to Riparian Buffers/Filter Strips - 5.3.3 Vegetated Open Swales - 5.3.4 Tree Planting/Tree Box - 5.3.5 Disconnection of Rooftop Runoff - 5.3.6 Stream Daylighting - 5.3.7 Rain Garden - 5.3.8 Green Roof - 5.3.9 Stormwater Planters - 5.3.10 Rain Tanks/Cisterns - 5.3.11 Porous Pavement - Infiltration Basin, SMP-1 0.080 TOTAL 0.080 (ac-ft) 5.11 Channel Protection Volume (CPv) Channel Protection Volume (CPv) is achieved by a volume reduction through green infrastructure practice. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 19 5.12 Overbank Flood (Qp) and Extreme Flood (Qf) Attenuation The primary purpose of the Overbank Flood (Qp) control sizing criterion is to prevent an increase in the frequency and magnitude of out-of-bank flooding generated by urban development. It requires attenuation of the 10-year, 24-hour storm to ensure post- development peak discharge rates do not exceed the pre-development condition. The intent of the Extreme Flood (Qf) criteria is to (a) prevent the increased risk of flood damage from large storm events, (b) maintain the boundaries of the pre-development 100-year floodplain, and (c) protect the physical integrity of stormwater management practices. It requires storage and attenuation of the 100-year, 24-hour storm to ensure post-development peak discharge rates do not exceed the pre-development condition. During the 10-year and 100-year 24-hour storm the post-development peak discharge rates do not exceed the pre-development rates. See Table 5-3 of this Report for a comparison of pre- and post-development peak rates. Table 5-3 below provides a summary of the existing conditions versus proposed conditions Qp and Qf attenuation for the Project’s watershed. Table 5-3 Existing Conditions Versus Proposed Conditions Qp and Qf Attenuation Pre Development Post Development 10 year, 24 hour storm (Qp) 0.41 CFS 0.37 CFS 100 year, 24 hour storm (Qf) 3.24 CFS 2.52 CFS 6.0 POST CONSTRUCTION STORMWATER MAINTENANCE 6.1 Maintenance to be Performed Regeneron Pharmaceuticals, Inc. will be responsible for long-term maintenance of all post construction stormwater management facilities. Post construction stormwater management controls are shown on Construction Drawings included in Appendix F. Post-construction maintenance for this project will consist of regular inspections of permanent stormwater management facilities. These maintenance procedures are essential to assure continual performance of the stormwater management practices on your site. During the inspection and any maintenance activity to the stormwater management practices, the responsible party should fill out an inspection and maintenance log to record that it was done. Specific procedures are as follows. Infiltration Basin ▪ The systems should be inspected quarterly for the first year and if there are no problems, the system can be inspected semi-annually after the first year. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 20 ▪ Periodically mow infiltration basin embankments and remove woody vegetation. Stabilize eroded banks and repair undercut and eroded areas at inflow location, as needed. ▪ If the infiltration system does not drain within 72 hours following a rainfall event, then a qualified professional should assess the condition of the system to determine measures required to restore infiltration function, including but not limited to removal of accumulated sediments or reconstruction of the system. ▪ Every year disc aerate bottom of ponds. ▪ Every 5 years scrape bottom of ponds to remove sediment and restore to original cross-section and infiltration rate. Seed or sod to restore ground cover. 7.0 CONSTRUCTION WASTE Waste Materials: All waste materials generated during construction shall be disposed of at a suitable landfill or transfer station. Hazardous Waste: The project will not be a generator of hazardous waste and it is not anticipated that any hazardous waste will be generated during construction. If there are any materials generated, a licensed hazardous waste carrier will be contracted to dispose the hazardous material at a suitable disposal site. If hazardous materials are discovered during construction, the work will be stopped until the issue is resolved. Waste: Portable sanitary facilities shall be made available to construction personnel and will be serviced regularly. 8.0 OFFSITE VEHICLE TRACKING If any off-site vehicle tracking occurs, the contractor will be directed to initiate street sweeping program in the immediate vicinity of the site. 9.0 SOIL RESTORATION Excessively compacted areas and areas of cut and fill on the Project Site shall have soil restoration performed as needed. Attached in Appendix K is “Deep Ripping and De- compaction, (DEC 2008).” The methodology in this document should be followed for specific soil restoration measures, performed in accordance with the Table below: Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 21 • If compost amendment is required, 2 to 4 inches of screened compost shall be incorporated into the soil. • Prior to application of the deep-ripping and de-compaction, the depth to bedrock or naturally occurring hardpan should be known so that the depth of tillage be adjusted according to those restrictive depths. • Soils with a slope that exceeds 10% shall not have full soil restoration with deep-ripping and de-compaction due to potential for erosion from tilled soil. • Any soil tillage (deep or shallow) shall not be done on soils that are excessively wet, as this will damage the soil. • Any tillage shall not be done within approximately 10’ of the drip-line of any existing established trees. • Any large stones that are unearthed during tillage should be removed from the surface prior to final surface preparation and vegetation establishment. 10.0 SPILL PREVENTION PRACTICES Good Housekeeping and Material Management Practices The following good housekeeping and material management practices shall be followed on site during the construction project to reduce the risk of spills or other accidental exposure of materials and substances to stormwater runoff. Type of Soil Disturbance Comments/Examples Minimal Soil Disturbance Preservation of Natural Features Areas where topsoil is stripped only-no change in grade Clearing and Grubbing HSG A& B HSG C & D apply 6 inches of topsoil Aerate* and apply 6 inches of topsoil HSG A& B HSG C & D Aerate and apply 6 inches of topsoil Apply full Soil Restoration** Areas where Runoff Reduction and/or infiltration practices are applied Keep construction equipment from crossing these areas. To protect newly installed practice from any ongoing construction activities construct a single phase operation fence area. **Per "Deep Ripping and Decopmpaction, DEC 2008" *Aeration includes the use of machines such as tractor-drawn implements with coulters making a narrow slit in the soil, a roller with many spikes making indentations in the soil, or prongs which function like a mini-subsoiler Restoration not permitted Restoration not required Soil Restoration Requirement Restoration not required, but may be applied to enhance the reduction specified for appropriate practices Areas of cut and fill Heavy traffic areas onsite (especially in a zone 5-25 feet around buildings, but not within a 5 foot perimeter around foundation walls) Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 22 ▪ Materials shall be brought on site in the minimum quantities required. ▪ All materials stored on site shall be stored in a neat, orderly manner in their appropriate containers, and if possible, under a roof or other enclosure. ▪ Products shall be kept in their original containers with the original manufacturer’s label. ▪ Substances shall not be mixed with one another unless recommended by the manufacturer. ▪ Whenever possible, all of a product will be used up before disposal. ▪ Manufacturer’s recommendations for proper use and disposal shall be followed. ▪ The construction manager or his designee shall inspect regularly to ensure proper use and disposal of materials on site. ▪ The contractor shall prohibit washing of tools, equipment, and machinery in or within 100 feet of any watercourse or wetland. ▪ All above grade storage tanks are to be protected from vehicle damage by temporary barriers. Inventory for Pollution Prevention Plan The materials and substances listed below are expected to be on-site during construction. ▪ Petroleum for fueling vehicles will be stored in above ground storage tanks. Tanks will either be steel with an enclosure capable of holding 110% of the storage tank volume or of a Con-Store, concrete encased type typically employed by NYSDOT. Hydraulic oil and other oils will be stored in their original containers. Concrete and asphalt will be stored in the original delivery trucks. ▪ Fertilizer may be stored on site in its original container for a short period of time prior to seeding. Original containers will be safely piled on pallets or similar devices to protect from moisture. ▪ Paints and other similar materials will be stored in their original containers and all empty containers will be disposed of in accordance with label directions. ▪ Portable sanitary facilities, which contain chemical disinfectants (deodorants) will be located on-site, with the disinfectants held in the tank of the toilet. Hazardous Products These practices are used to reduce the risks associated with hazardous materials. ▪ Products will be kept in original containers unless they are not re-sealable. ▪ Original labels and material safety data sheets will be retained; they contain important product information. ▪ If surplus product must be disposed of, manufacturers’ or local and State recommended methods for proper disposal will be followed. Spill Prevention Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 23 The following product specific practices will be followed on site. Petroleum Products: ▪ Construction personnel should be made aware that emergency telephone numbers are located in this SWPPP. ▪ The contractor shall immediately contact NYSDEC in the event of a spill, and shall take all appropriate steps to contain the spill, including construction of a dike around the spill and placing absorbent material over this spill. ▪ The contractor shall instruct personnel that spillage of fuels, oils, and similar chemicals must be avoided and will have arranged with a qualified spill remediation company to serve the site. ▪ Fuels, oils, and chemicals will be stored in appropriate and tightly capped containers. Containers shall not be disposed of on the project site. ▪ Fuels, oils, chemicals, material, equipment, and sanitary facilities will be stored/located away from trees and at least 100 feet from streams, wells, wet areas, and other environmentally sensitive sites. ▪ Dispose of chemical containers and surplus chemicals off the project site in accordance with label directions. ▪ Use tight connections and hoses with appropriate nozzles in all operations involving fuels, lubricating materials or chemicals. ▪ Use funnels when pouring fuels, lubricating materials or chemicals. ▪ Refueling and cleaning of construction equipment will take place in parking areas to provide rapid response to emergency situations. ▪ All on-site vehicles will be monitored for leaks and receive regular preventative maintenance to reduce the chance of leakage. Any vehicle leaking fuel or hydraulic fuel will be immediately scheduled for repairs and use will be discontinued until repairs are made. Fertilizers: ▪ Fertilizer will be stored in its original containers on pallets with water resistant coverings. ▪ Proper delivery scheduling will minimize storage time. ▪ Any damaged containers will be repaired immediately upon discovery and any released fertilizer recovered to the fullest extent practicable. Paints: ▪ No paints will be used therefore this is not applicable. Concrete: ▪ Concrete trucks will be allowed to wash out or discharge surplus concrete or drum wash water only in concrete washout containment structures at designated locations on site. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 24 Spill Control Practices In addition to the good housekeeping and material management practices discussed in the previous sections of this plan, the following practices will be followed for spill prevention and cleanup. The construction manager responsible for the day-to-day site operations will be the spill prevention and cleanup coordinator. He will designate at least three other site personnel who will receive spill prevention and cleanup training. These individuals will each become responsible for a particular phase of prevention and cleanup. The names of responsible spill personnel will be posted in the material storage area and in the onsite construction office or trailer. ▪ Manufacturers’ recommended methods for spill cleanup will be clearly posted and site personnel will be made aware of the procedures and the location of the information and cleanup supplies. ▪ Petroleum spills must be reported to DEC unless they meet all the following criteria: o The spill is known to be less than 5 gallons; and o The spill is contained and under the control of the spiller; and o The spill has not and will not reach the State’s water or any land; and o The spill is cleaned up within 2 hours of discovery. ▪ All reportable petroleum spills and most hazardous materials spills must be reported to DEC hotline (1-800-457-7362) within New York State; and (1-518 457-7362) from outside New York State. For spills not deemed reportable, it is strongly recommended that the facts concerning the incident be documented by the spiller and a record maintained for one year. ▪ Materials and equipment necessary for spill cleanup will be kept in the material storage area onsite. Equipment and materials will include but not be limited to absorbent pads, brooms, dust pans, mops, rags, gloves, goggles, activated clay, sand, sawdust, and plastic and metal trash containers specifically for this purpose. ▪ All spills will be cleaned up immediately after discovery. ▪ The spill area will be kept well-ventilated and personnel will wear appropriate protective clothing to prevent injury from contact with spilled substance. ▪ Spills of toxic or hazardous material will be reported to the appropriate State or local government agency, regardless of the size Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 25 11 .0 CERTIFICATIONS Preparer Certification of Compliance with Federal, State, and Local Regulations This Stormwater Pollution Prevention Plan was prepared in accordance with the New York State Department of Environmental Conservation SPDES General Permit for Stormwater Discharges from Construction Activities (Permit No. GP-0-25-001), pursuant to Article 17, Titles 7, 8 and Article 70 of the Environmental Conservation Law. This SPDES General Permit implements the Federal Clean Water Act pertaining to stormwater discharges. Name: Title: Signature: Date: Company Name: The LA Group, PC Owner Pollution Prevention Plan Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who are directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that false statements made herein are punishable as a Class A misdemeanor pursuant to Section 210.45 of the Penal Law. I understand that GP-0-25-001 requires site inspections be conducted by a qualified professional once every seven (7) days and when approved in writing by the NYSDEC, disturbances of greater than five (5) acres at one time require site inspections two (2) times every seven (7) days. These inspections shall be performed by a qualified professional as defined by the General Permit. The Owner/Operator will be held financially responsible for any and all fines related to work tasks that are not specified by the Contractor(s)/Subcontractor(s) below. Name: Title: Owner/Operator Signature: Date: Company Name: Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 26 Contractor and Subcontractor Certification I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the permittee must comply with the terms and conditions of the SPDES permit specific to the individual project site and that it is unlawful for any person to cause or contribute to a violation of water quality standards. A person is guilty of making a punishable false written statement when he knowingly makes a false statement, which he does not believe to be true, in a written instrument bearing a legally authorized form notice to the effect that false statements made therein are punishable. Making a punishable false written statement is a class A misdemeanor. Name Title Signature Date Company Name Address City, State, Zip Phone Number SWPPP Components You Are Responsible For 1. 2. 3. 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 27 Contractor and Subcontractor Certification I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the permittee must comply with the terms and conditions of the SPDES permit specific to the individual project site and that it is unlawful for any person to cause or contribute to a violation of water quality standards. A person is guilty of making a punishable false written statement when he knowingly makes a false statement, which he does not believe to be true, in a written instrument bearing a legally authorized form notice to the effect that false statements made therein are punishable. Making a punishable false written statement is a class A misdemeanor. Name Title Signature Date Company Name Address City, State, Zip Phone Number SWPPP Components You Are Responsible For 1. 2. 3. 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 28 Contractor and Subcontractor Certification I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the permittee must comply with the terms and conditions of the SPDES permit specific to the individual project site and that it is unlawful for any person to cause or contribute to a violation of water quality standards. A person is guilty of making a punishable false written statement when he knowingly makes a false statement, which he does not believe to be true, in a written instrument bearing a legally authorized form notice to the effect that false statements made therein are punishable. Making a punishable false written statement is a class A misdemeanor. Name Title Signature Date Company Name Address City, State, Zip Phone Number SWPPP Components You Are Responsible For 1. 2. 3. 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 29 Contractor and Subcontractor Certification I hereby certify under penalty of law that I understand and agree to comply with the terms and conditions of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the permittee must comply with the terms and conditions of the SPDES permit specific to the individual project site and that it is unlawful for any person to cause or contribute to a violation of water quality standards. A person is guilty of making a punishable false written statement when he knowingly makes a false statement, which he does not believe to be true, in a written instrument bearing a legally authorized form notice to the effect that false statements made therein are punishable. Making a punishable false written statement is a class A misdemeanor. Name Title Signature Date Company Name Address City, State, Zip Phone Number SWPPP Components You Are Responsible For 1. 2. 3. 4. 5. 6. Name of Trained Individual Responsible for SWPPP Implementation Title Signature of Trained Individual Responsible for SWPPP Implementation Date Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 30 12.0 DEFINITIONS Construction Activity(ies) - means any clearing, grading, excavation, filling, demolition, or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, logging equipment operation, the cutting and skidding of trees, tree removal, stump removal and/or brush removal. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility. Construction Phasing Plan - a plan designed to construct particular portions of an individual project at different times. Phasing is often used when a project is very large to limit the disturbance at a single time to 5 acres per phase. Erosion and Sediment Control Practices – temporary measures installed prior to construction and maintained during construction to temporarily treat any stormwater runoff. Once construction is completed and post-construction stormwater management practices are installed and the site is stabilized, the erosion and sediment control practices are removed from the site. Final Stabilization - means that all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip-rap or washed/crushed stone have been applied on all disturbed areas that are not covered by permanent structures, concrete pavement. Impervious Area (Cover) - means all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and compacted gravel surfaces (i.e. parking lots, driveways, roads, runways, and sidewalks); building rooftops, and miscellaneous impermeable structures such as patios, pools, and sheds. Owner or Operator – means the person, persons or legal entity which owns or leases the property on which the construction activity is occurring; and/or an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications. Post-Construction Stormwater Management Practices – permanent devices constructed or installed onsite to treat stormwater from a site when construction is completed. Qualified Inspector - means a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other Department endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 31 control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any post-construction stormwater management practices that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. Qualified Professional - means a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other Department endorsed individual(s). Individuals preparing SWPPPs that require the post-construction stormwater management practice component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York. State Pollutant Discharge Elimination System (SPDES) – means the system established pursuant to Article 17 of the Environmental Conservation Law (ECL) and 6 NYCRR Part 750 for issuance of permits authorizing discharges to the waters of the state. Stormwater Pollution Prevention Plan (SWPPP) - means a project specific report, including construction drawings, that among other things: describes the construction activity(ies), identifies the potential sources of pollution at the construction site; describes and shows the stormwater controls that will be used to control the pollutants (i.e. erosion and sediment controls; for many projects, includes post-construction stormwater management controls); and identifies procedures the permittee will implement to comply with the terms and conditions of the permit. See Part III of the permit for a complete description of the information that must be included in the SWPPP. Surface Waters of the State - shall be construed to include lakes, bays, sounds, ponds, impounding reservoirs, springs, rivers, streams, creeks, estuaries, marshes, inlets, canals, the Atlantic Ocean, within the territorial seas of the state of New York and all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface or underground waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800-941. Stormwater Pollution Prevention Plan Regeneron Guard House LA Group Project #: 2024092 Page 32 Temporary Stabilization – means that exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Trained Contractor – means an employee from a contracting (construction) company responsible for the day to day implementation of the SWPPP. The trained contractor must have received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity. After receiving the initial training, the qualified inspector shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of Department endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other Department endorsed entity). The trained contractor is responsible for the day-to-day implementation of the SWPPP. Appendix A Notice of Intent (NOI) & MS4 Acceptance Form Constructi on General Permi t (CGP) El ectronic Noti ce of Intent (eNOI) GP-0-25-001 version 1.11 (Submission #: HQD-7FX1-3A8TE, version 1) Details Originally Started By Cameron Alber Alternate Identifier Regeneron Guard House�Region 5 Submission ID HQD-7FX1-3A8TE Status Draft Form Input Eligibility Disturbance Threshold Yes No No No Other SPDES Permits Yes Threatened and Endangered Species No State Historic Preservation Act (SHPA) No 4.a. Will the construction activity: a) occur within an archeologically sensitive area indicated on the sensitivity map, or b) have the potential to affect a property that is listed or determined to be eligible for listing on the National or State Registers of Historic Places, or c) include a new permanent building on the construction site within the followi ng distances from a building, structure, or object that is more than 50 years old and OPRHP, a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determined is a historically/archeologically significant building, structure, or object: · 1-5 acres of disturbance—20 feet 1. Will the construction activity involve soil disturbances listed in Part I.A.1 of GP-0-25-001? 1.a. Will any runoff from the site enter a sewer system classified as a combined sewer? 1.b. Is this a remediation project being done under a Department approved work plan (i.e. CERCLA, RCRA, Voluntary Cleanup Agreement, etc.) with a SWPPP which meets the substantive requirements of GP-0-25-001? 1.c. Is the construction activity related to a stormwater discharge that does not require a permit as described in 40 CFR 122.3(e), e.g. non-point source agriculture or silviculture activities? 2. Will the discharge from the construction activity meet all conditions listed in Part I.A.2 of GP-0-25-001? 3. Will the construction activity potentially adversely affect a species that is endangered or threatened per Part I.A.3.? 4. Is the construction activity designated by the Commissioner of the Office of Parks, Recreation and Historic Preservation (OPRHP), pursuant to 9 NYCRR ��428.12 or 428.13 as exempt from the SHPA review (see Attachment 2 of the Letter of Resolution between NYSDEC and OPRHP, dated January 9, 2015)? 6/11/2025 3:27:15 P M Page 1 of 6 · 1-5 acres of disturbance—20 feet · 5-20 acres of disturbance—50 feet · 20+ acres of disturbance—100 feet? Yes Yes a) DEC consultation form sent to OPRHP and copied to the NYSDEC Agency Historic Preservation Officer (APO) the State Environmental Quality Review (SEQR) Environmental Assessment Form (EAF) with a negative declaration or the Findings Statement, with documentation of OPRHP�s agreement with the resolution State Environmental Quality Review (SEQR) Yes Yes Uniform Procedures Act (UPA) Permits Yes Steep Slope No Owner/Operator Information 8. Owner/Operator Name Regeneron Pharmaceuticals, Inc 9. Owner/Operator Contact Person Information First and Last Name Phone E-mail Aaron Haggerty 5186304185 Aaron.haggerty@regeneron.com 10. Owner/Operator Mailing Address 1 GLOBAL VW TROY, NY 12180-8371 USA No Corporation Yes 12.b.i. Department of State ID # 1226128 The Department of State ID can be found using the following link: Department of State | Division of Corporations 4.a.i. Have the impacts to historic properties been resolved? 4.a.i.1. Which of the following documentation will be maintained at the construction site? and, 5. Is the construction activity subject to SEQR (Part I.A.5.), or the equivalent environmental review from another NYS or federal agency (Part I.A.6.)? 5.a. Has the owner/operator obtained documentation that the project review pursuant to SEQR, or the equivalent, has been satisfied per Part I.A.5. or I.A.6. of GP-0-25-001? 6. Has the owner/operator obtained all necessary UPA permits from NYSDEC, or the equivalent from another NYS or federal agency per Part I.A.7.a. of GP-0-25-001? 7. Is the construction activity within the watershed of surface waters of the State classified as AA or AA-S identified utiliz ing the Stormwater Interactive Map on NYSDEC�s website? 11. Is the billing contact different from the Owner/Operator Contact? 12. What type of organization is the owner/operator? 12.b. Is the owner/operator registered with the Department of State to do business in New York State? 6/11/2025 3:27:15 P M Page 2 of 6 Site Information 13. Project/Site Name Regeneron Guard House 14. Site Address 56 DUPLAINVILLE RD SARATOGA SPGS, NY 12866-9020 Saratoga DEC Region 5 15. Site Latitude & Longitude 43.06172564567138,-73.8277876336314 Project Details A construction activity not part of a common plan of development or sale in accordance with Part I.D.1.a. Table 2 18. Consistent with Part III.B.1.c.i. of GP-0-25-001, provide a concise overview of the project. Describe existing and proposed conditions, and include any other relevant information. The proposed project consists of the construction of a new guard house along Marsel Drive with associated drive and parking improvements. The existing cover of the site consists of pavement and wooded areas. Enter the total project site acreage, the acreage to be disturbed, and the future impervious area (acreage) within the disturbed area, rounded to the nearest tenth of an acre. 19. Total Site Area (acres) 1.3 20. Total Area to be Disturbed (acres) 1.3 21. Existing Impervious Area to be Disturbed (acres) 0.3 22. Future Impervious Area Within Disturbed Area (acres) 0.5 Nature of the project: Redevelopment with increase in impervious area No 24. Indicate the percentage (%) of each Hydrologic Soil Group(HSG) at the site. A (%) 100 B (%) 0 C (%) 0 D (%) 0 25. Enter the planned start and end dates of the disturbance activities. 16. This eNOI submission is for: 17. Does the project type fall under Table 1 or Table 2 of Appendix B of GP-0-25-001? If any portion of the construction activity falls under Table 2, regardless of the size of the disturbance, select "Table 2". 23. Do you plan to disturb more than 5 acres of soil at any one time? 6/11/2025 3:27:15 P M Page 3 of 6 Start Date 08/04/2025 End Date 08/28/2026 26. Identify the nearest surface waterbody(ies) to which construction site runoff will discharge. Rowland Hollow Creek Stream/Creek Off Site No No No Yes 31.a. What is the name of the municipality/entity that owns the separate storm sewer system? If the separate sewer system is owned by an MS4 Operator, enter the MS4 Operator name. Saratoga Springs No No Required SWPPP Components General SWPPP Requirements Yes Yes Yes Yes 2024 SWPPP Preparer Professional Engineer (P.E.) 40. Name of the person who prepared the SWPPP Doug Heller 41. SWPPP Preparer Organization Name The LA Group 42. SWPPP Preparer Contact Information First and Last Name Phone E-mail Doug Heller 5185878100 dheller@thelagroup.com 27. Type of waterbody identified in question 26? 28. Has the surface waterbody in question 26 been identified as a 303(d) segment in Appendix D of GP-0-25-001? 29. Is this project located in one of the Watersheds identified in Appendix C of GP-0-25-001? 30. Will the project disturb soils within a State regulated wetland or the protected 100 foot adjacent area? 31. Does the site runoff enter a separate storm sewer system (including roadside drains, swales, ditches, culverts, etc)? 32. Will future use of this site be an agricultural property as defined by the NYS Agriculture and Markets Law? 33. Is this property owned by a state authority, state agency, federal government or local government? 34. Has a SWPPP been developed in conformance with the requirements in Part III. of GP-0-25-001? 35. Does the SWPPP demonstrate consideration of the future physical risks due to climate change pursuant to the CRRA, 6 NYCRR Part 490, and associated guidance per Part III.A.2. of GP-0-25-001? 36. Has the required Erosion and Sediment Control component of the SWPPP been developed in conformance with the current NYS Standards and Specifications for Erosion and Sediment Control (aka Blue Book)? 37. Has the post-construction stormwater management practice component of the SWPPP been developed in conformance with the NYS Stormwater Management Design Manual? 37.a. Which version of the NYS Stormwater Management Design Manual was used to develop the SWPPP? 39. The Stormwater Pollution Prevention Plan (SWPPP) was prepared by: 6/11/2025 3:27:15 P M Page 4 of 6 43. SWPPP Preparer Address 40 LONG ALY SARATOGA SPGS, NY 12866-2116 Download SWPPP Preparer Certification Form Please take the following steps to prepare and upload your preparer certification form: 1) Cli ck on the link below to download a blank certification form 2) The certified SWPPP preparer should sign this form 3) Upload the completed form Download SWPPP Preparer Certification Form 44. Please upload the SWPPP Preparer Certification Comment Yes Erosion & Sediment Control Criteria Yes Post-Construction Criteria Site Planning and Soil Restoration Preservation of Undisturbed Area Preservation of Buffers Reduction of Clearing and Grading All disturbed areas will be restored in accordance with the Soil Restoration requirements in Table 5.3 of the Design Manual (see page 5-22). Water Quality Criteria 49. Water Quality Sizing Criteria Total WQv required (acre-feet) Total RRv provided (acre-feet) Minimum RRv (acre-feet) Total WQv provided (acre-feet) Sum of RRv and WQv provided 0.049 0.080 NaN Water Quantity Criteria Yes Operation and Maintenance Yes 53.a. Identify the entity responsible for the long-term Operation and Maintenance. Regeneron Pharmaceuticals Post-Construction SMP Identification 54. Post-Construction RR Techniques and Standard SMPs 44.a. Has the SWPPP Preparer Certification Form been signed by the SWPPP preparer in accordance with Part VII.J of GP-0-25- 001? 45. Has a construction sequence schedule for the planned management practices been prepared? 46. Identify all site planning practices that were used to prepare the final site plan/layout for the project. 47. Indicate which of the following soil restoration criteria was used to address the requirements in Section 5.1.6 ("Soil Restoration") of the Design Manual. 50. Per Section 9.2.1.C.VI and VII of the 2024 Design Manual, is there 0% change to hydrology that increases the discharge rate and volume from the project site? 53. Has a long-term Operation and Maintenance Plan for the post-construction stormwater management practice(s) been developed? 6/11/2025 3:27:16 P M Page 5 of 6 RR Techniques and SMPs Contributing Impervious Area (acres)Total Contributing Area (acres) Infi ltration Basin (I-2)0.771 55. Alternative SMPs Type of Alternative SMP Manufacturer of the Alternative SMP Name of the Alternative SMP Contributing Impervious Area (acres) Other Permits None No MS4 SWPPP Acceptance Yes MS4 SWPPP Acceptance Form MS4 SWPPP Acceptance Form Download Download the MS4 SWPPP Acceptance Form from the link below. MS4 SWPPP Acceptance Form 60. MS4 Acceptance or No Jurisdiction Form Upload Comment Yes Owner/Operator Certification Owner/Operator Certification Form Download Download the Owner/Operator Certification Form by clicking the link below. Owner/Operator Certification Form 61. Upload Owner/Operator Certification Form Comment Yes Additional Project Information 62. Enter any additional pertinent project information in the text box below. 56. Identify other permits, existing and new, that are required for this project/facility. 57. Is this NOI for a change in owner/operator per Part I.G.? 59. Will the construction activities be within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s) and discharge to the MS4(s)? 59.a. Which form is required per Part I.D.2.b.ii.? 60.a. Has the form been signed by the principal executive officer or ranking elected official�or duly authoriz ed representative of that person�in accordance with Part VII.J. and submitted along with this NOI? 61.a. Has the Owner/Operator Certification Form from Appendix J been signed by the owner/operator, or a representative of the owner/operator in accordance with Part VII.J of GP-0-25-001 and uploaded to the eNOI? 6/11/2025 3:27:16 P M Page 6 of 6 Appendix B Existing Conditions Watershed Map and HydroCAD Calculations HY D HY D LEGEND SUBCATCHMENT ID STORMWATER MANAGEMENT PRACTICE TIME OF CONCENTRATION PATH SUBCATCHMENT BOUNDARY Regeneron Pharmaceuticals Guard House Saratoga Springs, NY 12866 Predevelopment Condition Watershed Map - W2 Date: XX/XX/25 10 20 30 40 50500 Scale: 1" = 50' 1 SMP-1 1 Subcat 1 2 Subcat 2 3 Subcat 3 5 Subcat 5 AP-1 AP-1 AP-2 AP-2 Routing Diagram for Regeneron_predev Prepared by The LA Group, PC, Printed 6/9/2025 HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Subcat Reach Pond Link Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 2HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 1.802 39 >75% Grass cover, Good, HSG A (1, 2, 3, 5) 0.282 77 Fallow, bare soil, HSG A (2) 0.939 98 Paved parking, HSG A (1, 2, 3, 5) 4.930 36 Woods, Fair, HSG A (1, 2, 3, 5) Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 3HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 7.952 HSG A 1, 2, 3, 5 0.000 HSG B 0.000 HSG C 0.000 HSG D 0.000 Other Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 4HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 1.802 0.000 0.000 0.000 0.000 1.802 >75% Grass cover, Good 1, 2, 3, 5 0.282 0.000 0.000 0.000 0.000 0.282 Fallow, bare soil 2 0.939 0.000 0.000 0.000 0.000 0.939 Paved parking 1, 2, 3, 5 4.930 0.000 0.000 0.000 0.000 4.930 Woods, Fair 1, 2, 3, 5 NY-Regneron 24-hr S1 1-yr Rainfall=2.22"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 5HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.757 ac 5.87% Impervious Runoff Depth=0.00"Subcatchment 1: Subcat 1 Flow Length=619' Tc=40.2 min CN=40 Runoff=0.00 cfs 0.000 af Runoff Area=2.199 ac 23.04% Impervious Runoff Depth>0.03"Subcatchment 2: Subcat 2 Flow Length=400' Tc=32.5 min CN=56 Runoff=0.01 cfs 0.005 af Runoff Area=1.059 ac 3.08% Impervious Runoff Depth=0.00"Subcatchment 3: Subcat 3 Flow Length=175' Tc=42.3 min CN=39 Runoff=0.00 cfs 0.000 af Runoff Area=1.937 ac 12.26% Impervious Runoff Depth=0.00"Subcatchment 5: Subcat 5 Flow Length=407' Tc=37.1 min CN=44 Runoff=0.00 cfs 0.000 af Inflow=0.01 cfs 0.005 afLink AP-1: AP-1 Primary=0.01 cfs 0.005 af Inflow=0.00 cfs 0.000 afLink AP-2: AP-2 Primary=0.00 cfs 0.000 af NY-Regneron 24-hr S1 10-yr Rainfall=3.70"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 6HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.757 ac 5.87% Impervious Runoff Depth>0.01"Subcatchment 1: Subcat 1 Flow Length=619' Tc=40.2 min CN=40 Runoff=0.01 cfs 0.003 af Runoff Area=2.199 ac 23.04% Impervious Runoff Depth>0.37"Subcatchment 2: Subcat 2 Flow Length=400' Tc=32.5 min CN=56 Runoff=0.39 cfs 0.068 af Runoff Area=1.059 ac 3.08% Impervious Runoff Depth>0.01"Subcatchment 3: Subcat 3 Flow Length=175' Tc=42.3 min CN=39 Runoff=0.00 cfs 0.001 af Runoff Area=1.937 ac 12.26% Impervious Runoff Depth>0.06"Subcatchment 5: Subcat 5 Flow Length=407' Tc=37.1 min CN=44 Runoff=0.02 cfs 0.010 af Inflow=0.39 cfs 0.072 afLink AP-1: AP-1 Primary=0.39 cfs 0.072 af Inflow=0.02 cfs 0.010 afLink AP-2: AP-2 Primary=0.02 cfs 0.010 af NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 1HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.757 ac 5.87% Impervious Runoff Depth>0.44"Subcatchment 1: Subcat 1 Flow Length=619' Tc=40.2 min CN=40 Runoff=0.50 cfs 0.100 af Runoff Area=2.199 ac 23.04% Impervious Runoff Depth>1.48"Subcatchment 2: Subcat 2 Flow Length=400' Tc=32.5 min CN=56 Runoff=2.21 cfs 0.271 af Runoff Area=1.059 ac 3.08% Impervious Runoff Depth>0.39"Subcatchment 3: Subcat 3 Flow Length=175' Tc=42.3 min CN=39 Runoff=0.16 cfs 0.034 af Runoff Area=1.937 ac 12.26% Impervious Runoff Depth>0.66"Subcatchment 5: Subcat 5 Flow Length=407' Tc=37.1 min CN=44 Runoff=0.65 cfs 0.107 af Inflow=2.59 cfs 0.406 afLink AP-1: AP-1 Primary=2.59 cfs 0.406 af Inflow=0.65 cfs 0.107 afLink AP-2: AP-2 Primary=0.65 cfs 0.107 af NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 2HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Subcat 1 Runoff = 0.50 cfs @ 12.82 hrs, Volume= 0.100 af, Depth> 0.44" Routed to Link AP-1 : AP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.344 39 >75% Grass cover, Good, HSG A 0.162 98 Paved parking, HSG A 2.251 36 Woods, Fair, HSG A 2.757 40 Weighted Average 2.595 94.13% Pervious Area 0.162 5.87% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 26.7 100 0.0150 0.06 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 13.5 519 0.0164 0.64 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 40.2 619 Total Summary for Subcatchment 2: Subcat 2 Runoff = 2.21 cfs @ 12.48 hrs, Volume= 0.271 af, Depth> 1.48" Routed to Link AP-1 : AP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.659 39 >75% Grass cover, Good, HSG A 0.282 77 Fallow, bare soil, HSG A 0.507 98 Paved parking, HSG A 0.752 36 Woods, Fair, HSG A 2.199 56 Weighted Average 1.693 76.96% Pervious Area 0.507 23.04% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.8 100 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 8.7 300 0.0133 0.58 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 32.5 400 Total NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 3HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Subcatchment 3: Subcat 3 Runoff = 0.16 cfs @ 12.87 hrs, Volume= 0.034 af, Depth> 0.39" Routed to Link AP-1 : AP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.327 39 >75% Grass cover, Good, HSG A 0.033 98 Paved parking, HSG A 0.699 36 Woods, Fair, HSG A 1.059 39 Weighted Average 1.026 96.92% Pervious Area 0.033 3.08% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 41.5 100 0.0050 0.04 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 0.8 75 0.0933 1.53 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 42.3 175 Total Summary for Subcatchment 5: Subcat 5 Runoff = 0.65 cfs @ 12.69 hrs, Volume= 0.107 af, Depth> 0.66" Routed to Link AP-2 : AP-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.471 39 >75% Grass cover, Good, HSG A 0.237 98 Paved parking, HSG A 1.228 36 Woods, Fair, HSG A 1.937 44 Weighted Average 1.699 87.74% Pervious Area 0.237 12.26% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 18.1 100 0.0400 0.09 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 19.0 307 0.0029 0.27 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 37.1 407 Total NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_predev Printed 6/9/2025Prepared by The LA Group, PC Page 4HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Link AP-1: AP-1 Inflow Area = 6.015 ac, 11.65% Impervious, Inflow Depth > 0.81" for 100-yr event Inflow = 2.59 cfs @ 12.55 hrs, Volume= 0.406 af Primary = 2.59 cfs @ 12.55 hrs, Volume= 0.406 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Link AP-2: AP-2 Inflow Area = 1.937 ac, 12.26% Impervious, Inflow Depth > 0.66" for 100-yr event Inflow = 0.65 cfs @ 12.69 hrs, Volume= 0.107 af Primary = 0.65 cfs @ 12.69 hrs, Volume= 0.107 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Appendix C Proposed Condition Watershed Map and HydroCAD Calculations HY D HY D 1 2 3 5 6 8 AP-1 AP-2 SMP-1 FB-1 FB-2 LEGEND SUBCATCHMENT ID STORMWATER MANAGEMENT PRACTICE TIME OF CONCENTRATION PATH SUBCATCHMENT BOUNDARY Regeneron Pharmaceuticals Guard House Saratoga Springs, NY 12866 Proposed Condition Watershed Map - W2 Date: 06/10/25 10 20 30 40 50500 Scale: 1" = 50' 1 SMP-1 1 Subcat 1 2 Subcat 2 3 Subcat 3 5 Subcat 5 6 Subcat 6 8 Subcat 8 CB-1 CB CB-1 FB-1 South Forebay FB-2 North Forebay SMP-1 Infiltration Basin AP-1 AP-1 AP-2 AP-2 Routing Diagram for Regeneron_postdev Prepared by The LA Group, PC, Printed 6/9/2025 HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Subcat Reach Pond Link Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 2HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 2.725 39 >75% Grass cover, Good, HSG A (1, 2, 3, 5, 6, 8) 0.282 77 Fallow, bare soil, HSG A (2) 1.370 98 Paved parking, HSG A (1, 2, 3, 5, 6, 8) 3.575 30 Woods, Good, HSG A (1, 2, 3, 5, 6, 8) Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 3HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 7.952 HSG A 1, 2, 3, 5, 6, 8 0.000 HSG B 0.000 HSG C 0.000 HSG D 0.000 Other Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 4HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 2.725 0.000 0.000 0.000 0.000 2.725 >75% Grass cover, Good 1, 2, 3, 5, 6, 8 0.282 0.000 0.000 0.000 0.000 0.282 Fallow, bare soil 2 1.370 0.000 0.000 0.000 0.000 1.370 Paved parking 1, 2, 3, 5, 6, 8 3.575 0.000 0.000 0.000 0.000 3.575 Woods, Good 1, 2, 3, 5, 6, 8 NY-Regneron 24-hr S1 1-yr Rainfall=2.22"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 5HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.177 ac 1.95% Impervious Runoff Depth=0.00"Subcatchment 1: Subcat 1 Flow Length=326' Tc=22.0 min CN=36 Runoff=0.00 cfs 0.000 af Runoff Area=1.807 ac 22.78% Impervious Runoff Depth>0.03"Subcatchment 2: Subcat 2 Flow Length=341' Tc=21.6 min CN=56 Runoff=0.01 cfs 0.005 af Runoff Area=0.868 ac 3.41% Impervious Runoff Depth=0.00"Subcatchment 3: Subcat 3 Flow Length=154' Tc=24.2 min CN=36 Runoff=0.00 cfs 0.000 af Runoff Area=1.122 ac 46.63% Impervious Runoff Depth>0.12"Subcatchment 5: Subcat 5 Flow Length=414' Tc=18.0 min CN=63 Runoff=0.04 cfs 0.011 af Runoff Area=0.848 ac 24.90% Impervious Runoff Depth>0.00"Subcatchment 6: Subcat 6 Flow Length=143' Tc=27.5 min CN=50 Runoff=0.00 cfs 0.000 af Runoff Area=1.129 ac 13.44% Impervious Runoff Depth=0.00"Subcatchment 8: Subcat 8 Flow Length=291' Tc=24.7 min CN=42 Runoff=0.00 cfs 0.000 af Peak Elev=330.82' Inflow=0.04 cfs 0.011 afPond CB-1: CB-1 12.0" Round Culvert n=0.013 L=30.0' S=0.0050 '/' Outflow=0.04 cfs 0.011 af Peak Elev=329.05' Storage=491 cf Inflow=0.04 cfs 0.011 afPond FB-1: South Forebay Outflow=0.00 cfs 0.000 af Peak Elev=331.00' Storage=537 cf Inflow=0.00 cfs 0.000 afPond FB-2: North Forebay Outflow=0.00 cfs 0.000 af Peak Elev=327.00' Storage=0 cf Inflow=0.00 cfs 0.000 afPond SMP-1: Infiltration Basin Outflow=0.00 cfs 0.000 af Inflow=0.01 cfs 0.005 afLink AP-1: AP-1 Primary=0.01 cfs 0.005 af Inflow=0.00 cfs 0.000 afLink AP-2: AP-2 Primary=0.00 cfs 0.000 af NY-Regneron 24-hr S1 10-yr Rainfall=3.70"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 6HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.177 ac 1.95% Impervious Runoff Depth=0.00"Subcatchment 1: Subcat 1 Flow Length=326' Tc=22.0 min CN=36 Runoff=0.00 cfs 0.000 af Runoff Area=1.807 ac 22.78% Impervious Runoff Depth>0.37"Subcatchment 2: Subcat 2 Flow Length=341' Tc=21.6 min CN=56 Runoff=0.36 cfs 0.056 af Runoff Area=0.868 ac 3.41% Impervious Runoff Depth=0.00"Subcatchment 3: Subcat 3 Flow Length=154' Tc=24.2 min CN=36 Runoff=0.00 cfs 0.000 af Runoff Area=1.122 ac 46.63% Impervious Runoff Depth>0.65"Subcatchment 5: Subcat 5 Flow Length=414' Tc=18.0 min CN=63 Runoff=0.57 cfs 0.061 af Runoff Area=0.848 ac 24.90% Impervious Runoff Depth>0.19"Subcatchment 6: Subcat 6 Flow Length=143' Tc=27.5 min CN=50 Runoff=0.06 cfs 0.013 af Runoff Area=1.129 ac 13.44% Impervious Runoff Depth>0.04"Subcatchment 8: Subcat 8 Flow Length=291' Tc=24.7 min CN=42 Runoff=0.01 cfs 0.003 af Peak Elev=331.15' Inflow=0.57 cfs 0.061 afPond CB-1: CB-1 12.0" Round Culvert n=0.013 L=30.0' S=0.0050 '/' Outflow=0.57 cfs 0.061 af Peak Elev=330.02' Storage=1,572 cf Inflow=0.57 cfs 0.061 afPond FB-1: South Forebay Outflow=0.08 cfs 0.025 af Peak Elev=331.02' Storage=541 cf Inflow=0.06 cfs 0.013 afPond FB-2: North Forebay Outflow=0.06 cfs 0.013 af Peak Elev=327.01' Storage=4 cf Inflow=0.11 cfs 0.039 afPond SMP-1: Infiltration Basin Outflow=0.11 cfs 0.039 af Inflow=0.36 cfs 0.056 afLink AP-1: AP-1 Primary=0.36 cfs 0.056 af Inflow=0.01 cfs 0.003 afLink AP-2: AP-2 Primary=0.01 cfs 0.003 af NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 1HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Time span=5.00-20.00 hrs, dt=0.05 hrs, 301 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=2.177 ac 1.95% Impervious Runoff Depth>0.25"Subcatchment 1: Subcat 1 Flow Length=326' Tc=22.0 min CN=36 Runoff=0.21 cfs 0.046 af Runoff Area=1.807 ac 22.78% Impervious Runoff Depth>1.49"Subcatchment 2: Subcat 2 Flow Length=341' Tc=21.6 min CN=56 Runoff=2.18 cfs 0.224 af Runoff Area=0.868 ac 3.41% Impervious Runoff Depth>0.25"Subcatchment 3: Subcat 3 Flow Length=154' Tc=24.2 min CN=36 Runoff=0.08 cfs 0.018 af Runoff Area=1.122 ac 46.63% Impervious Runoff Depth>2.05"Subcatchment 5: Subcat 5 Flow Length=414' Tc=18.0 min CN=63 Runoff=2.14 cfs 0.192 af Runoff Area=0.848 ac 24.90% Impervious Runoff Depth>1.05"Subcatchment 6: Subcat 6 Flow Length=143' Tc=27.5 min CN=50 Runoff=0.59 cfs 0.074 af Runoff Area=1.129 ac 13.44% Impervious Runoff Depth>0.55"Subcatchment 8: Subcat 8 Flow Length=291' Tc=24.7 min CN=42 Runoff=0.33 cfs 0.052 af Peak Elev=331.70' Inflow=2.14 cfs 0.192 afPond CB-1: CB-1 12.0" Round Culvert n=0.013 L=30.0' S=0.0050 '/' Outflow=2.14 cfs 0.192 af Peak Elev=330.19' Storage=1,847 cf Inflow=2.15 cfs 0.238 afPond FB-1: South Forebay Outflow=2.03 cfs 0.202 af Peak Elev=331.08' Storage=558 cf Inflow=0.59 cfs 0.074 afPond FB-2: North Forebay Outflow=0.59 cfs 0.074 af Peak Elev=328.49' Storage=1,378 cf Inflow=2.55 cfs 0.276 afPond SMP-1: Infiltration Basin Outflow=1.67 cfs 0.276 af Inflow=2.19 cfs 0.243 afLink AP-1: AP-1 Primary=2.19 cfs 0.243 af Inflow=0.33 cfs 0.052 afLink AP-2: AP-2 Primary=0.33 cfs 0.052 af NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 2HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Subcatchment 1: Subcat 1 Runoff = 0.21 cfs @ 12.68 hrs, Volume= 0.046 af, Depth> 0.25" Routed to Pond FB-1 : South Forebay Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 1.107 39 >75% Grass cover, Good, HSG A 0.043 98 Paved parking, HSG A 1.028 30 Woods, Good, HSG A 2.177 36 Weighted Average 2.134 98.05% Pervious Area 0.043 1.95% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.6 100 0.1500 0.16 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 11.4 226 0.0044 0.33 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 22.0 326 Total Summary for Subcatchment 2: Subcat 2 Runoff = 2.18 cfs @ 12.29 hrs, Volume= 0.224 af, Depth> 1.49" Routed to Link AP-1 : AP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.593 39 >75% Grass cover, Good, HSG A 0.282 77 Fallow, bare soil, HSG A 0.412 98 Paved parking, HSG A 0.521 30 Woods, Good, HSG A 1.807 56 Weighted Average 1.395 77.22% Pervious Area 0.412 22.78% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 14.4 100 0.0700 0.12 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 7.2 241 0.0124 0.56 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 21.6 341 Total NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 3HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Subcatchment 3: Subcat 3 Runoff = 0.08 cfs @ 12.71 hrs, Volume= 0.018 af, Depth> 0.25" Routed to Link AP-1 : AP-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.329 39 >75% Grass cover, Good, HSG A 0.030 98 Paved parking, HSG A 0.510 30 Woods, Good, HSG A 0.868 36 Weighted Average 0.838 96.59% Pervious Area 0.030 3.41% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 23.8 100 0.0200 0.07 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 0.4 54 0.1296 2.52 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 24.2 154 Total Summary for Subcatchment 5: Subcat 5 Runoff = 2.14 cfs @ 12.22 hrs, Volume= 0.192 af, Depth> 2.05" Routed to Pond CB-1 : CB-1 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.132 39 >75% Grass cover, Good, HSG A 0.523 98 Paved parking, HSG A 0.467 30 Woods, Good, HSG A 1.122 63 Weighted Average 0.599 53.37% Pervious Area 0.523 46.63% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 0.5 33 0.0303 1.17 Sheet Flow, Smooth surfaces n= 0.011 P2= 2.60" 13.2 77 0.0519 0.10 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 4.3 304 0.0033 1.17 Shallow Concentrated Flow, Paved Kv= 20.3 fps 18.0 414 Total NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 4HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Subcatchment 6: Subcat 6 Runoff = 0.59 cfs @ 12.43 hrs, Volume= 0.074 af, Depth> 1.05" Routed to Pond FB-2 : North Forebay Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.263 39 >75% Grass cover, Good, HSG A 0.211 98 Paved parking, HSG A 0.374 30 Woods, Good, HSG A 0.848 50 Weighted Average 0.637 75.10% Pervious Area 0.211 24.90% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 17.0 60 0.0167 0.06 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 7.0 29 0.0050 0.07 Sheet Flow, Grass: Short n= 0.150 P2= 2.60" 2.5 11 0.0100 0.07 Sheet Flow, Grass: Short n= 0.150 P2= 2.60" 1.0 43 0.0100 0.70 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 27.5 143 Total Summary for Subcatchment 8: Subcat 8 Runoff = 0.33 cfs @ 12.58 hrs, Volume= 0.052 af, Depth> 0.55" Routed to Link AP-2 : AP-2 Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs NY-Regneron 24-hr S1 100-yr Rainfall=6.15" Area (ac) CN Description 0.302 39 >75% Grass cover, Good, HSG A 0.152 98 Paved parking, HSG A 0.675 30 Woods, Good, HSG A 1.129 42 Weighted Average 0.977 86.56% Pervious Area 0.152 13.44% Impervious Area NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 5HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 12.0 100 0.1100 0.14 Sheet Flow, Woods: Light underbrush n= 0.400 P2= 2.60" 0.1 22 0.0455 4.33 Shallow Concentrated Flow, Paved Kv= 20.3 fps 12.6 169 0.0020 0.22 Shallow Concentrated Flow, Woodland Kv= 5.0 fps 24.7 291 Total Summary for Pond CB-1: CB-1 Inflow Area = 1.122 ac, 46.63% Impervious, Inflow Depth > 2.05" for 100-yr event Inflow = 2.14 cfs @ 12.22 hrs, Volume= 0.192 af Outflow = 2.14 cfs @ 12.22 hrs, Volume= 0.192 af, Atten= 0%, Lag= 0.0 min Primary = 2.14 cfs @ 12.22 hrs, Volume= 0.192 af Routed to Pond FB-1 : South Forebay Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 331.70' @ 12.22 hrs Device Routing Invert Outlet Devices #1 Primary 330.70'12.0" Round Culvert L= 30.0' Ke= 0.500 Inlet / Outlet Invert= 330.70' / 330.55' S= 0.0050 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf Primary OutFlow Max=2.11 cfs @ 12.22 hrs HW=331.69' (Free Discharge) 1=Culvert (Barrel Controls 2.11 cfs @ 3.38 fps) Summary for Pond FB-1: South Forebay Inflow Area = 3.299 ac, 17.15% Impervious, Inflow Depth > 0.87" for 100-yr event Inflow = 2.15 cfs @ 12.22 hrs, Volume= 0.238 af Outflow = 2.03 cfs @ 12.31 hrs, Volume= 0.202 af, Atten= 5%, Lag= 5.0 min Primary = 2.03 cfs @ 12.31 hrs, Volume= 0.202 af Routed to Pond SMP-1 : Infiltration Basin Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 330.19' @ 12.31 hrs Surf.Area= 1,738 sf Storage= 1,847 cf Plug-Flow detention time= 70.2 min calculated for 0.202 af (85% of inflow) Center-of-Mass det. time= 23.6 min ( 861.1 - 837.6 ) Volume Invert Avail.Storage Storage Description #1 327.00' 3,851 cf Custom Stage Data (Irregular) Listed below (Recalc) NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 6HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 327.00 0 0.0 0 0 0 328.00 129 65.0 43 43 338 329.00 778 170.0 408 451 2,305 330.00 1,451 185.9 1,097 1,548 2,789 331.00 3,277 287.0 2,303 3,851 6,601 Device Routing Invert Outlet Devices #1 Primary 330.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=2.01 cfs @ 12.31 hrs HW=330.19' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 2.01 cfs @ 1.08 fps) Summary for Pond FB-2: North Forebay Inflow Area = 0.848 ac, 24.90% Impervious, Inflow Depth > 1.05" for 100-yr event Inflow = 0.59 cfs @ 12.43 hrs, Volume= 0.074 af Outflow = 0.59 cfs @ 12.44 hrs, Volume= 0.074 af, Atten= 0%, Lag= 0.5 min Primary = 0.59 cfs @ 12.44 hrs, Volume= 0.074 af Routed to Pond SMP-1 : Infiltration Basin Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Starting Elev= 331.00' Surf.Area= 241 sf Storage= 537 cf Peak Elev= 331.08' @ 12.44 hrs Surf.Area= 272 sf Storage= 558 cf (21 cf above start) Plug-Flow detention time= 72.9 min calculated for 0.062 af (83% of inflow) Center-of-Mass det. time= 0.5 min ( 852.9 - 852.3 ) Volume Invert Avail.Storage Storage Description #1 329.00' 1,005 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 329.00 100 60.0 0 0 100 330.00 385 110.0 227 227 782 331.00 241 77.0 310 537 1,282 332.00 740 130.5 468 1,005 2,171 Device Routing Invert Outlet Devices #1 Primary 331.00'10.0' long x 10.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=0.58 cfs @ 12.44 hrs HW=331.08' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.58 cfs @ 0.71 fps) NY-Regneron 24-hr S1 100-yr Rainfall=6.15"Regeneron_postdev Printed 6/9/2025Prepared by The LA Group, PC Page 7HydroCAD® 10.20-4c s/n 00439 © 2024 HydroCAD Software Solutions LLC Summary for Pond SMP-1: Infiltration Basin Inflow Area = 4.147 ac, 18.74% Impervious, Inflow Depth > 0.80" for 100-yr event Inflow = 2.55 cfs @ 12.32 hrs, Volume= 0.276 af Outflow = 1.67 cfs @ 12.70 hrs, Volume= 0.276 af, Atten= 34%, Lag= 22.9 min Discarded = 1.67 cfs @ 12.70 hrs, Volume= 0.276 af Routing by Stor-Ind method, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Peak Elev= 328.49' @ 12.70 hrs Surf.Area= 1,445 sf Storage= 1,378 cf Plug-Flow detention time= 5.9 min calculated for 0.275 af (100% of inflow) Center-of-Mass det. time= 5.7 min ( 864.6 - 858.9 ) Volume Invert Avail.Storage Storage Description #1 327.00' 11,360 cf Custom Stage Data (Irregular) Listed below (Recalc) Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet) (sq-ft) (feet) (cubic-feet) (cubic-feet) (sq-ft) 327.00 450 212.0 0 0 450 328.00 1,115 230.0 758 758 1,121 329.00 1,840 250.0 1,462 2,220 1,921 330.00 2,620 270.0 2,219 4,439 2,789 331.00 3,455 290.0 3,028 7,467 3,723 332.00 4,348 310.0 3,893 11,360 4,724 Device Routing Invert Outlet Devices #1 Discarded 327.00'50.000 in/hr Exfiltration over Surface area Discarded OutFlow Max=1.67 cfs @ 12.70 hrs HW=328.49' (Free Discharge) 1=Exfiltration (Exfiltration Controls 1.67 cfs) Summary for Link AP-1: AP-1 Inflow Area = 2.675 ac, 16.49% Impervious, Inflow Depth > 1.09" for 100-yr event Inflow = 2.19 cfs @ 12.30 hrs, Volume= 0.243 af Primary = 2.19 cfs @ 12.30 hrs, Volume= 0.243 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Summary for Link AP-2: AP-2 Inflow Area = 1.129 ac, 13.44% Impervious, Inflow Depth > 0.55" for 100-yr event Inflow = 0.33 cfs @ 12.58 hrs, Volume= 0.052 af Primary = 0.33 cfs @ 12.58 hrs, Volume= 0.052 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Appendix D Storm Data Stormwater Practice Sizing Job Name and # Regeneron Saratoga Water Quality Volume Calculation 6/11/2025 WQv = [(P)(Rv)(A)]/12 Where: Rv = 0.05 + 0.009(I) I = impervious cover in percent P = 90% rainfall (see Figure 4.1 in NYS Stormwater Management Design Manual) A = Area in acres Required WQv New Impervious % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 20,125 WQv Required = 1832 ft3 0.042 ac-ft Disturbed Impervious % Impervious 100.00% Rv 0.95 90% Rainfall 1.15 Area in Square Feet 14,113 WQv Calculated = 1285 ft3 0.029 ac-ft WQv Required = 321 ft3 0.007 ac-ft Total = 2153 ft3 0.049 ac-ft Step 2 - Calculate Water Quality Volume Design Point: P= 1.15 inches Drainage Area Number Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) SMP Description 1 0.82 0.21 25 0.28 953 2 3.25 0.55 17 0.20 2,741 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Total 4.07 0.76 19 0.22 3693 Required WQv Calculate Required WQv Is this project subject to Section 4.3 of the NYS Design Manual for Enhanced Phosphorus Removal? What is the nature of this construction project? Step 2 - Calculate Water Quality Volume 0.08 af Infiltration Basin (I-2) Design Point: Drainage Area Number Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) Precipitation (in)Description 1 0.82 0.21 25 0.28 953 1.15 0 50 No No 50 No 5 5 477 1 4 10 15 Value Units WQv 953 cf db 4.0 ft Ab 238 sf Ab 923 sf 953 Enter Site Data For Drainage Area to be Treated by Practice Design Criteria Enter underlying soil infiltration rate (based on geotechnical testing, refer to Appendix D) Is the contributing area to the practice an "Infiltration Restricted" stormwater hotspot? Enter depth to seasonal high water table (ft) Enter depth to bedrock (ft) Maximum contributing area (acres) Is the contributing area to the practice an "Infiltration Prohibited" stormwater hotspot? Is the contributing area greater than the maximum allowed contributing area? Determine Runoff Reduction RRv Provided cf Required Surface Area Enter Surface Area Provided Sizing Criteria Notes Water Quality Volume Enter pretreatment volume provided (cf) Enter depth of freeboard (ft) Basin depth Enter depth of basin (ft) Enter slope of maintenance access (%) Enter width of maintenance access (ft) Infiltration Basin (I-2) Design Point: Drainage Area Number Contributing Area (Acres) Impervious Area (Acres) Percent Impervious % Rv WQv (cf) Precipitation (in)Description 2 3.25 0.55 17 0.20 2,741 1.15 0 50 No No 50 No 8 8 1371 1 4 10 15 Value Units WQv 2741 cf db 4.0 ft Ab 685.00 sf Ab 923 sf 2,741 Enter Site Data For Drainage Area to be Treated by Practice Enter pretreatment volume provided (cf) Maximum contributing area (acres) Design Criteria Enter underlying soil infiltration rate (based on geotechnical testing, refer to Appendix D) Is the contributing area to the practice an "Infiltration Restricted" stormwater hotspot? Is the contributing area to the practice an "Infiltration Prohibited" stormwater hotspot? Enter depth of freeboard (ft) Enter depth of basin (ft) Is the contributing area greater than the maximum allowed contributing area? Enter depth to seasonal high water table (ft) Enter depth to bedrock (ft) Notes Water Quality Volume Basin depth Enter slope of maintenance access (%) Enter width of maintenance access (ft) Sizing Criteria RRv Provided cf Required Surface Area Enter Surface Area Provided Determine Runoff Reduction Appendix E Resource Mapping and Soils Data United States Department of Agriculture A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Saratoga County, New York Natural Resources Conservation Service June 9, 2025 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/ portal/nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/? cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require 2 alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 Soil Map..................................................................................................................5 Soil Map................................................................................................................6 Legend..................................................................................................................7 Map Unit Legend..................................................................................................8 Map Unit Descriptions..........................................................................................8 Saratoga County, New York............................................................................10 WnA—Windsor loamy sand, 0 to 3 percent slopes.....................................10 WnB—Windsor loamy sand, 3 to 8 percent slopes.....................................11 References............................................................................................................13 4 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 5 6 Custom Soil Resource Report Soil Map 47 6 8 0 8 0 47 6 8 1 6 0 47 6 8 2 4 0 47 6 8 3 2 0 47 6 8 4 0 0 47 6 8 4 8 0 47 6 8 5 6 0 47 6 8 6 4 0 47 6 8 7 2 0 47 6 8 0 8 0 47 6 8 1 6 0 47 6 8 2 4 0 47 6 8 3 2 0 47 6 8 4 0 0 47 6 8 4 8 0 47 6 8 5 6 0 47 6 8 6 4 0 47 6 8 7 2 0 595130 595210 595290 595370 595450 595530 595610 595130 595210 595290 595370 595450 595530 595610 43° 3' 55'' N 73 ° 4 9 ' 5 4 ' ' W 43° 3' 55'' N 73 ° 4 9 ' 3 2 ' ' W 43° 3' 33'' N 73 ° 4 9 ' 5 4 ' ' W 43° 3' 33'' N 73 ° 4 9 ' 3 2 ' ' W N Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 18N WGS84 0 150 300 600 900 Feet 0 45 90 180 270 Meters Map Scale: 1:3,300 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Saratoga County, New York Survey Area Data: Version 24, Aug 29, 2024 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Sep 9, 2022—Oct 22, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Custom Soil Resource Report 7 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI WnA Windsor loamy sand, 0 to 3 percent slopes 18.8 44.5% WnB Windsor loamy sand, 3 to 8 percent slopes 23.5 55.5% Totals for Area of Interest 42.3 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, Custom Soil Resource Report 8 onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. Custom Soil Resource Report 9 Saratoga County, New York WnA—Windsor loamy sand, 0 to 3 percent slopes Map Unit Setting National map unit symbol: 2svkg Elevation: 0 to 990 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 240 days Farmland classification: Farmland of statewide importance Map Unit Composition Windsor, loamy sand, and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Windsor, Loamy Sand Setting Landform:Outwash plains, outwash terraces, deltas, dunes Landform position (three-dimensional):Tread, riser Down-slope shape:Linear, convex Across-slope shape:Linear, convex Parent material:Loose sandy glaciofluvial deposits derived from granite and/or loose sandy glaciofluvial deposits derived from schist and/or loose sandy glaciofluvial deposits derived from gneiss Typical profile O - 0 to 1 inches: moderately decomposed plant material A - 1 to 3 inches: loamy sand Bw - 3 to 25 inches: loamy sand C - 25 to 65 inches: sand Properties and qualities Slope:0 to 3 percent Depth to restrictive feature:More than 80 inches Drainage class:Excessively drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat):Moderately high to very high (1.42 to 99.90 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Maximum salinity:Nonsaline (0.0 to 1.9 mmhos/cm) Available water supply, 0 to 60 inches: Low (about 3.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Ecological site: F144AY022MA - Dry Outwash Hydric soil rating: No Custom Soil Resource Report 10 Minor Components Deerfield, loamy sand Percent of map unit:10 percent Landform:Deltas, terraces, outwash plains Landform position (two-dimensional):Footslope Landform position (three-dimensional):Tread, talf Down-slope shape:Linear Across-slope shape:Linear Hydric soil rating: No Hinckley, loamy sand Percent of map unit:5 percent Landform:Deltas, kames, eskers, outwash plains Landform position (two-dimensional):Summit, shoulder, backslope Landform position (three-dimensional):Nose slope, side slope, crest, head slope, rise Down-slope shape:Convex Across-slope shape:Convex, linear Hydric soil rating: No WnB—Windsor loamy sand, 3 to 8 percent slopes Map Unit Setting National map unit symbol: 2svkf Elevation: 0 to 1,210 feet Mean annual precipitation: 36 to 71 inches Mean annual air temperature: 39 to 55 degrees F Frost-free period: 140 to 250 days Farmland classification: Farmland of statewide importance Map Unit Composition Windsor and similar soils:85 percent Minor components:15 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Windsor Setting Landform:Outwash terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Parent material:Loose sandy glaciofluvial deposits derived from granite and/or schist and/or gneiss Typical profile Oe - 0 to 1 inches: moderately decomposed plant material A - 1 to 3 inches: loamy sand Bw - 3 to 25 inches: loamy sand Custom Soil Resource Report 11 C - 25 to 65 inches: sand Properties and qualities Slope:3 to 8 percent Depth to restrictive feature:More than 80 inches Drainage class:Excessively drained Runoff class: Negligible Capacity of the most limiting layer to transmit water (Ksat):Moderately high to very high (1.42 to 99.90 in/hr) Depth to water table:More than 80 inches Frequency of flooding:None Frequency of ponding:None Maximum salinity:Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm) Available water supply, 0 to 60 inches: Low (about 4.5 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Ecological site: F145XY008MA - Dry Outwash Hydric soil rating: No Minor Components Hinckley Percent of map unit:10 percent Landform:Eskers Landform position (three-dimensional):Side slope Down-slope shape:Convex Across-slope shape:Convex Ecological site:F145XY008MA - Dry Outwash Hydric soil rating: No Deerfield, loamy sand Percent of map unit:5 percent Landform:Terraces Landform position (three-dimensional):Tread Down-slope shape:Linear Across-slope shape:Linear Ecological site:F144AY027MA - Moist Sandy Outwash Hydric soil rating: No Custom Soil Resource Report 12 References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/national/soils/?cid=nrcs142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http:// www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580 Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ home/?cid=nrcs142p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 13 United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ nrcs/detail/soils/scientists/?cid=nrcs142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/? cid=nrcs142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf Custom Soil Resource Report 14 Appendix F Map Set Appendix G SWPPP Inspection Form Regeneron Guard Shack WEEKLY SWPPP INSPECTION REPORT Inspector Name: Date: Signature (required): Time: Weather: Inspection #: Soil Conditions (dry, saturated, etc): Note: Digital photos, with date stamp required for all practices requiring corrective action, before and after, to be attached to the inspection report. YES NO N/A 1. Routine Inspection. Date of last inspection: 2. Inspection following rain event. Date/time of storm ending: Rainfall amount: Recorded by: 3. Is this a final site inspection? 4. Has site undergone final stabilization? If so, have all temporary erosion and sediment controls been removed? Site Disturbance (Indicate Locations on Plan) YES NO N/A 1. Areas previously disturbed, but have not undergone active site work in the last 7 days? 2. Areas disturbed within last 7 days? 3. Areas expected to be disturbed in next 7 days? 4. Do areas of steep slopes or complex stabilization issues exist? If “YES” explain: 5. Are there currently more than 5 acres of disturbed soil at the site? If so make sure there is an approval letter from NYS DEC. Additional Comments: Inspection of Erosion and Sediment Control Devices Type of Control Device Accumulation (if any) in % Repairs/Maintenance Needed 1. 2. 3. 4. 5. 6. Stabilization/Runoff YES NO N/A 1. Are all existing disturbed areas contained by control devices? Type of devices: 2. Are there areas that require stabilization within the next 7 days? Specify Area: 3. Have stabilization measures been initiated in inactive areas? 4. Is there current snow cover or frozen ground conditions? 5. Rills or gullies? 6. Slumping/deposition? 7. Loss of vegetation? 8. Lack of germination? 9. Loss of mulching? Receiving Structures/Water Bodies (Indicate locations where runoff leaves the project site on the site plan) YES NO N/A 1. Surface water swale or natural surface waterbody? If natural waterbody: Is waterbody located onsite, or adjacent to property boundary? Description of condition: 2. Municipal or community system? Inspect locations where runoff from project site enters the receiving waters and indicate if there is evidence of: a. Rills or gullies? b. Slumping/deposition? c. Loss of vegetation? d. Undermining of structures? e. Was there a discharge into the receiving water on the day of inspection? f. Is there evidence of turbidity, sedimentation, or oil in the receiving waters? Additional Comments: Inspection of Post-Construction Stormwater Management Control Devices Type of Control Device Phase of Construction Repairs/Maintenance Needed 1. 2. 3. 4. General Site Condition YES NO N/A 1. Have action items from previous reports been addressed? 2. Does routine maintenance of protection components occur on a regular basis? 3. Does cleaning and/or sweeping affected roadways occur, at minimum, daily? 4. Is debris and litter removed on a monthly basis, or as necessary? 5. Is the site maintained in an orderly manner? Describe the condition of all natural waterbodies within or adjacent to the Project that receive runoff from the site: Contractors progress over last 7 days: Anticipated work to be begun in the next 7 days: Additional Comments: Visual Observations YES NO N/A 1. All erosion and sediment control measures have been installed/constructed? 2. All erosion and sediment control measures are being maintained properly? SUMMARY OF ACTION ITEMS TO REPAIR/REPLACE/MAINTAIN/CORRECT DEFICIENCIES Action Reported To (no signature required): Company: Appendix H Other SWPPP Forms Construction Sequence SWPPP Plan Changes Spill Response FormThe contractor shall prepare a summary of construction status using the Construction Sequence Form below once every month. Significant deviations to the sequence and reasons for those deviations (i.e. weather, subcontractor availability, etc.), shall be noted by the contractor. The schedule shall be used to record the dates for initiation of construction, implementation of erosion control measures, stabilization, etc. A copy of this table will be maintained at the construction site and updated in addition to the individual Inspection Reports completed for each inspection. Construction Sequence Form Construction Activities (Identify name of planned practices) Date Complete 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. STORM WATER POLLUTION PREVENTION PLAN PLAN CHANGES, AUTHORIZATION, AND CHANGE CERTIFICATION CHANGES REQUIRED TO THE POLLUTION PREVENTION PLAN: REASONS FOR CHANGES: REQUESTED BY: _________________________ DATE: _________________________ AUTHORIZED BY: _________________________ DATE: _________________________ CERTIFICATION OF CHANGES: I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that failure to strictly adhere to any of the permit requirements shall constitute a violation of the Individual SPDES Permit NY029660, and that there are substantial criminal, civil, and administrative penalties associated with violating the provisions of the permit SIGNATURE: DATE: SPILL RESPONSE REPORT Within 1 hour of a spill the following must be notified: Aaron Haggerty (518)-630-4185 NYSDEC Spill Response Hotline 1-800-457-7362 Spill Response Contractor Material Spilled: Approximate Volume: Location: Distance to nearest down gradient drainage: Distance to nearest down gradient open water: Temporary control measures in place: Appendix I SPDES General Permit GP-0-25-001 PREFACE Pursuant to Section 402 of the Clean Water Act (CWA), and 40 CFR 122.26(b)(14)(x), (15)(i), and (15)(ii), stormwater discharges from certain construction activities are unlawful unless they are authorized by a National Pollutant Discharge Elimination System (NPDES) permit or by a state permit program. New York State administers the approved State Pollutant Discharge Elimination System (SPDES) program with permits issued in accordance with the New York State Environmental Conservation Law (ECL) Article 17, Titles 7 and 8, and Article 70, as well as 6 NYCRR Parts 621 and 750. Construction activities constitute construction of a point source and, therefore, pursuant to ECL sections 17-0505, 17-0701, and 17-0803, the owner or operator must have coverage under a SPDES permit prior to commencement of construction activities. The owner or operator cannot wait until there is an actual discharge from the construction site to obtain permit coverage. *Note: The italicized words/phrases within this permit are defined in Appendix A. NEW YORK STATE DEPARTMENT OF ENVIRONMENTAL CONSERVATION SPDES CONSTRUCTION GENERAL PERMIT (CGP) GP-0-25-001 FOR STORMWATER DISCHARGES FROM CONSTRUCTION ACTIVITIES Table of Contents Part I. How to Obtain Coverage and General Requirements ..................................... 5 A. Eligibility Requirements...................................................................................... 5 B. Types of Discharges Authorized ........................................................................ 9 C. Prohibited Discharges ...................................................................................... 10 D. Electronic Notice of Intent (eNOI) Submittal..................................................... 10 E. General Requirements for Owners or Operators with Permit Coverage .......... 14 F. Permit Coverage for Discharges Authorized Under GP-0-20-001.................... 18 G. Change of Owner or Operator.......................................................................... 19 Part II. Water Quality-Based Effluent Limitations..................................................... 20 A. Maintaining Water Quality ................................................................................ 20 B. Effluent Limitations Applicable to Discharges from Construction Activities ...... 20 C. Post-Construction Stormwater Management Practice (SMP) Requirements ... 23 Part III. Stormwater Pollution Prevention Plan (SWPPP)......................................... 28 A. General SWPPP Requirements ....................................................................... 28 B. Required SWPPP Contents ............................................................................. 32 C. Required SWPPP Components by Project Type.............................................. 37 Part IV. Inspection and Maintenance Requirements ................................................ 37 A. General Construction Site Inspection and Maintenance Requirements ........... 37 B. Contractor Maintenance Inspection Requirements .......................................... 37 C. Qualified Inspector Inspection Requirements................................................... 38 Part V. How to Terminate CGP Coverage.................................................................. 43 A. Electronic Notice of Termination (eNOT) Submittal.......................................... 43 Part VI. Record Retention and Reporting.................................................................. 45 A. Record Retention ............................................................................................. 46 B. Reporting ......................................................................................................... 46 Part VII. Standard Permit Requirements ................................................................... 46 A. Duty to Comply................................................................................................. 46 B. Need to Halt or Reduce Activity Not a Defense................................................ 46 C. Penalties .......................................................................................................... 46 D. False Statements ............................................................................................. 47 E. Re-Opener Clause ........................................................................................... 47 F. Duty to Mitigate ................................................................................................ 47 G. Requiring Another General Permit or Individual SPDES Permit....................... 47 H. Duty to Provide Information.............................................................................. 49 I. Extension ......................................................................................................... 49 J. Signatories and Certification ............................................................................ 50 K. Inspection and Entry ........................................................................................ 52 L. Confidentiality of Information............................................................................ 53 M. Other Permits May Be Required ...................................................................... 53 N. NYSDEC Orders or Civil Decrees/Judgments.................................................. 53 O. Property Rights ................................................................................................ 53 P. Compliance with Interstate Standards.............................................................. 53 Q. Oil and Hazardous Substance Liability............................................................. 54 R. Severability....................................................................................................... 54 S. NYSDEC Approved Forms............................................................................... 54 APPENDIX A – Abbreviations and Definitions.......................................................... 55 Abbreviations............................................................................................................. 55 Definitions.................................................................................................................. 56 APPENDIX B – Required SWPPP Components by Project Type............................. 64 Table 1....................................................................................................................... 64 Table 2....................................................................................................................... 66 APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal............... 68 APPENDIX D – Impaired Waterbodies (by Construction Related Pollutants) ........ 74 APPENDIX E – List of NYSDEC Regional Offices..................................................... 80 APPENDIX F – SWPPP Preparer Certification Form ................................................ 81 APPENDIX G – MS4 SWPPP Acceptance Form........................................................ 83 APPENDIX H – NYCDEP SWPPP Acceptance/Approval Form ................................ 86 APPENDIX I – MS4 No Jurisdiction Form.................................................................. 89 APPENDIX J – Owner/Operator Certification Form.................................................. 91 Part I. Part I. How to Obtain Coverage and General Requirements To be covered under this permit, the owner or operator must meet all eligibility requirements in Part I.A. and follow the requirements for obtaining permit coverage in Part I.D., F., or G. A. Eligibility Requirements For a common plan of development or sale, the phase(s) that meet the eligibility requirements in Part I.A. may obtain coverage under this permit even if other phase(s) of the same common plan of development or sale do not meet the eligibility requirements and require an individual SPDES permit. 1. The owner’s or operator’s construction activities involve soil disturbances of: a. one or more acres; or b. less than one acre which are part of a common plan of development or sale that will ultimately disturb one or more acres; or c. less than one acre where NYSDEC has determined that a SPDES permit is required for stormwater discharges based on the potential for contribution to a violation of a water quality standard or for significant contribution of pollutants to surface waters of the State. i. 5,000 square feet or more, but less than one acre, and are in the New York City Watershed located east of the Hudson River, Appendix C Figure 1; or ii. 20,000 square feet or more, but less than one acre, within the municipal boundaries of the City of New York (NYC); or iii. less than 20,000 square feet which are part of a common plan of development or sale that will ultimately disturb 20,000 square feet or more, but less than one acre, within the municipal boundaries of NYC; or iv. that creates 5,000 square feet or more of impervious area within the municipal boundaries of NYC. 5 Part I.A.2. 2. Discharges from the owner’s or operator’s construction activities are/were not: a. already covered by a different SPDES permit; or b. covered under a different SPDES permit that was denied, terminated, or revoked; or c. identified in an expired individual SPDES permit that was not renewed; or d. required to obtain an individual SPDES permit or another general SPDES permit in accordance with Part VII.K. 3. If construction activities may adversely affect a species that is endangered or threatened, the owner or operator must obtain a: a. permit issued pursuant to 6 NYCRR Part 182 for the project; or b. letter issued by NYSDEC of non-jurisdiction pursuant to 6 NYCRR Part 182 for the project. 4. If construction activities have the potential to affect an historic property, the owner or operator must obtain one of the following: a. documentation that the construction activity is not within an archeological buffer area indicated on the sensitivity map, and that the construction activity is not located on or immediately adjacent to a property listed or determined to be eligible for listing on the National or State Registers of Historic Places, and that there is no new permanent building on the construction site within the following distances from a building, structure, or object that is more than 50 years old, or if there is such a new permanent building on the construction site within those parameters that NYS Office of Parks, Recreation and Historic Preservation (OPRHP), a Historic Preservation Commission of a Certified Local Government, or a qualified preservation professional has determined that the building, structure, or object more than 50 years old is not historically/archeologically significant: i. 1-5 acres of disturbance - 20 feet; or ii. 5-20 acres of disturbance - 50 feet; or 6 Part I.A.4.a.iii. iii. 20+ acres of disturbance - 100 feet. b. NYSDEC consultation form sent to OPRHP,1 and copied to NYSDEC’s Agency Historic Preservation Officer (APO), and i. the State Environmental Quality Review Act (SEQR) Environmental Assessment Form (EAF) with a negative declaration or the Findings Statement, with documentation of OPRHP’s agreement with the resolution; or ii. documentation from OPRHP that the construction activity will result in No Impact; or iii. documentation from OPRHP providing a determination of No Adverse Impact; or iv. a Letter of Resolution signed by the owner or operator, OPRHP and the DEC APO which allows for this construction activity to be eligible for coverage under the general permit in terms of the State Historic Preservation Act (SHPA). c. documentation of satisfactory compliance with Section 106 of the National Historic Preservation Act for a coterminous project area: i. No Affect; or ii. No Adverse Affect; or iii. Executed Memorandum of Agreement. d. documentation that SHPA Section 14.09 has been completed by NYSDEC or another state agency. 5. If construction activities are subject to SEQR, the owner or operator must obtain documentation that SEQR has been satisfied. 6. If construction activities are not subject to SEQR, but subject to the equivalent environmental review from another New York State or federal agency, the 1 The consultation form can be submitted, along with other project information, through OPRHP's Cultural Resource Information System (CRIS) portal. If submitted through CRIS, paper copies of the consultation form need not be mailed. 7 Part I.A.6. owner or operator must obtain documentation that project review, pursuant to a process equivalent to SEQR from another New York State or federal agency, has been satisfied. 7. If construction activities require Uniform Procedures Act (UPA) Permits (see 6 NYCRR Part 621) from NYSDEC, or the equivalent from another New York State or federal agency, the owner or operator must: a. obtain all such necessary permits; or b. receive notification from NYSDEC pursuant to 6 NYCRR 621.3(a)(4) excepting Part I.A.7.a. 8. Construction activities are not eligible if they meet the following criteria in Part I.A.8.a. or b.: a. For linear transportation and linear utility project types, the construction activities: i. are within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater Interactive Map on NYSDEC’s website; and ii. are undertaken on land with no existing impervious cover; and iii. disturb two or more acres of steep slope. b. For all other project types, the construction activities: i. are within the watershed of surface waters of the State classified as AA or AA-S identified utilizing the Stormwater Interactive Map on NYSDEC’s website; and ii. are undertaken on land with no existing impervious cover; and iii. disturb one or more acres of steep slope. 8 Part I.B. B. Types of Discharges Authorized 1. The following stormwater discharges are authorized under this permit: a. Stormwater discharges, including stormwater runoff, snowmelt runoff, and surface runoff and drainage, associated with construction activity, are authorized under this permit provided that appropriate stormwater controls are designed, installed, and maintained in accordance with Part II. and Part III. b. Stormwater discharges from construction support activities at the construction site (including concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, and borrow areas) if the following requirements are met: i. The support activity is directly related to the construction site required to have permit coverage for stormwater discharges; and ii. The support activity is not a commercial operation, nor does it serve multiple unrelated construction sites; and iii. The support activity does not continue to operate beyond the completion of the construction activity at the site it supports; and iv. Stormwater controls are implemented in accordance with Part II. and Part III. for discharges from the support activity areas. 2. The following non-stormwater discharges associated with construction activity are authorized under this permit: a. Non-stormwater discharges listed in 6 NYCRR 750-1.2(a)(29)(vi), with the following exception: “Discharges from firefighting activities are authorized only when the firefighting activities are emergencies/unplanned”; and b. Non-stormwater discharges of waters to which other components have not been added that are used in accordance with the SWPPP to control dust or irrigate vegetation in stabilized areas; and c. Uncontaminated discharges from dewatering operations 9 Part I.B.3. 3. Authorized discharges of stormwater or authorized discharges of non- stormwater, commingled with a discharge authorized by a different SPDES permit and/or a discharge that does not require SPDES permit authorization, are also authorized under this permit. C. Prohibited Discharges 1. Non-stormwater discharges prohibited under this permit include but are not limited to: a. Wastewater from washout of concrete; and b. Wastewater from washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; and c. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; and d. Soaps, solvents, or detergents used in vehicle and equipment washing or external building washdown; and e. Toxic or hazardous substances from a spill or other release. D. Electronic Notice of Intent (eNOI) Submittal To receive authorization in accordance with Part I.D.3.b., the owner or operator must submit a complete eNOI in accordance with the requirements in Part I.D. The eNOI contains questions to: ensure eligibility requirements in Part I.A. have been met; obtain owner or operator contact information; obtain the total area to be disturbed and the existing/future impervious areas (rounded to the nearest tenth of an acre); confirm Traditional Land Use Control MS4 Operator jurisdiction over construction projects; satisfy the EPA eRule requirements; confirm that the Water Quality-Based Effluent Limitations in Part II. have been met; demonstrate consideration of the future risks due to climate change in accordance with Part III.A.2.; and confirm that the other Stormwater Pollution Prevention Plan (SWPPP) requirements in Part III. have been met. 1. An eNOI may be submitted for: a. construction activities that are not part of a common plan of development or sale; or 10 Part I.D.1.b. b. an entire common plan of development or sale; or c. separate phase(s) of a common plan of development or sale if the following requirements are met: i. the common plan of development or sale meets the eligibility requirements of Part I.A.5. or 6.; and ii. the phase(s) meet(s) all other eligibility requirements of Part I.A.; and iii. Part III.C. Required SWPPP Components by Project Type is based on the common plan of development or sale, not the phase(s); or d. tree clearing that is associated with, or will support, a renewable energy generation, transmission, or storage project that meets Part I.A.5. and 6., if the tree clearing: i. meets all other eligibility requirements of Part I.A.; and ii. will occur in NYSDEC’s Regions 3-9; and iii. is not within ¼ mile of a bat hibernaculum protected pursuant to 6 NYCRR Part 182; and iv. will occur between November 1st and March 31st. 2. As prerequisites for submitting an eNOI, the owner or operator must: a. prepare a SWPPP for Part I.D.1.a., b., c., or d. in accordance with Part III.; and b. based on the following criteria, upload the following signature forms signed in accordance with Part VII.J. to the eNOI prior to submission: i. for all eNOIs: 1. the SWPPP Preparer Certification Form, Appendix F, signed by the SWPPP preparer; and 11 Part I.D.2.b.i.2. 2. the Owner/Operator Certification Form, Appendix J, signed by the owner or operator; and ii. if an eNOI includes construction activities within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s) that will discharge to the MS4(s): 1. determine if the Traditional Land Use Control MS4 Operator(s) have review authority. A Traditional Land Use Control MS4 Operator does not have review authority where: a. the owner or operator of the construction activities in Part I.D.2.b.ii. is the same entity as the Traditional Land Use Control MS4 Operator identified in Part I.D.2.b.ii.; or b. there is a statute exempting the owner or operator from zoning review by the Traditional Land Use Control MS4 Operator; or c. there is no such statute per Part I.D.2.b.ii.1.b., the Traditional Land Use Control MS4 Operator concludes, after public hearing, that it does not have zoning review authority in accordance with Legal Memorandum LU14 Updated January 2020 “Governmental Immunity from Zoning and Other Legislation”; and 2. if the Traditional Land Use Control MS4 Operator(s) have review authority, submit the SWPPP to the Traditional Land Use Control MS4 Operator(s) for review and have: a. if outside the municipal boundaries of NYC: the MS4 SWPPP Acceptance Form, Appendix G, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2.; or 12 Part I.D.2.b.ii.2.b. b. if within the municipal boundaries of NYC: The City of New York Department of Environmental Protection (NYCDEP) SWPPP Acceptance/Approval Form, Appendix H, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2.; and 3. if the Traditional Land Use Control MS4 Operator does not have review authority, have the MS4 No Jurisdiction Form, Appendix I, signed by the principal executive officer or ranking elected official from the Traditional Land Use Control MS4 Operator, or by a duly authorized representative of that person in accordance with Part VII.J.2. 3. Submitting an eNOI: a. The owner or operator must submit a complete Notice of Intent electronically using a NYSDEC approved form.2 b. The owner or operator is authorized to commence construction activity as of the authorization date indicated in the Letter of Authorization (LOA), which is sent by NYSDEC after a complete eNOI is submitted. i. If an eNOI is received for a SWPPP that deviates from one of the technical standards but demonstrates equivalence in accordance with Part III.B.1.a.ii. or Part III.B.2.b.ii., if the SWPPP includes construction activities that are not within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s), and/or if the SWPPP includes construction activities within the municipal boundary(ies) of Traditional Land Use Control MS4 Operator(s) that do not have review authority in accordance with Part I.D.2.b.ii.1., the authorization date indicated in the LOA will be 60 business days after the eNOI submission date. 2 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 13 Part I.D.3.c. c. If Traditional Land Use Control MS4 Operator(s) have review authority in accordance with Part I.D.2.b.ii.2., the owner or operator must, within five business days of receipt of the LOA, send an electronic copy of the LOA to the Traditional Land Use Control MS4 Operator(s) with review authority. E. General Requirements for Owners or Operators with Permit Coverage 1. As of the date the LOA is received, the owner or operator must make the eNOI, SWPPP, and LOA available for review and copying in accordance with the requirements in Part VII.H. When applicable, as of the date an updated LOA is received, the owner or operator must make the updated LOA available for review and copying in accordance with the requirements in Part VII.H. 2. The owner or operator must ensure compliance with all requirements of this permit and that the provisions of the SWPPP, including any changes made to the SWPPP in accordance with Part III.A.5., are properly implemented and maintained from the commencement of construction activity until: a. all areas of disturbance have achieved final stabilization; and b. the owner’s or operator’s coverage under this permit is terminated in accordance with Part V.A.5.a. 3. As of the date of the commencement of construction activities until Part I.E.2.a. and b. have been met, the owner or operator must maintain at the construction site, a copy of: a. all documentation necessary to demonstrate eligibility with this permit; and b. this permit; and c. the SWPPP; and d. the signed SWPPP Preparer Certification Form; and e. the signed MS4 SWPPP Acceptance Form or signed NYCDEP SWPPP Acceptance/Approval Form or signed MS4 No Jurisdiction Form (when applicable); and f. the signed Owner/Operator Certification Form; and 14 Part I.E.3.g. g. the eNOI; and h. the LOA; and i. the LOA transmittal to the Traditional Land Use Control MS4 Operator in accordance with Part I.D.3.c. (when applicable). 4. The owner or operator must maintain at the construction site, until Part I.E.2.a. and b. have been met, as of the date the documents become final or are received, a copy of the: a. responsible contractor’s or subcontractor’s certification statement(s) in accordance with Part III.A.7.; and b. inspection reports in accordance with Part IV.C.4. and 6.; and c. Request to Disturb Greater Than Five Acres and the Authorization Letter to Disturb Greater Than Five Acres in accordance with Part I.E.6. (when applicable); and d. Request to Continue Coverage and the Letter of Continued Coverage (LOCC) in accordance with Part I.F.2. and 4. (when applicable); and e. The updated LOA(s) in accordance with Part I.E.9. (when applicable). 5. The owner or operator must maintain the documents in Part I.E.3. and 4. in a secure location, such as a job trailer, on-site construction office, or mailbox with lock. The secure location must be accessible during normal business hours to an individual performing a compliance inspection. The documents must be paper documents unless electronic documents are accessible to the inspector during an inspection to the same extent as a paper copy stored at the site would be. If electronic documents are kept on site, the owner or operator must maintain functional equipment on site available to an inspector during normal hours of operation such that an inspector may view the electronic documents in a format that can be read in a similar manner as a paper record and in a legally dependable format with no less evidentiary value than their paper equivalent. 6. The owner or operator must meet the following requirements prior to disturbing greater than five acres of soil at any one time: a. The owner or operator must submit a written Request to Disturb Greater Than Five Acres to: 15 Part I.E.6.a.i. i. NYSDEC’s Regional Office Division of Water staff based on the project location, Appendix E, if a Traditional Land Use Control MS4 Operator does not have review authority in accordance with Part I.D.2.b.ii.1.; or ii. the Traditional Land Use Control MS4 Operator, if a Traditional Land Use Control MS4 Operator has review authority in accordance with Part I.D.2.b.ii.1.; or iii. NYSDEC’s Regional Office Division of Water staff based on the project location, Appendix E, and each involved Traditional Land Use Control MS4 Operator, if the project spans multiple municipalities with more than one Traditional Land Use Control MS4 Operator involved with review authority in accordance with Part I.D.2.b.ii.1. b. The written Request to Disturb Greater Than Five Acres must include: i. The SPDES permit identification number (Permit ID); and ii. Full technical justification demonstrating why alternative methods of construction that would result in five acres of soil disturbance or less at any one time are not feasible; and iii. The phasing plan for the project and sequencing plans for all phases from the SWPPP in accordance with Part III.B.1.d.; and iv. Plans with locations and details of erosion and sediment control practices such that the heightened concern for erosion when disturbing greater than five acres at one time has been addressed; and v. Acknowledgment that “the owner or operator will comply with the requirements in Part IV.C.2.b.”; and vi. Acknowledgment that “the owner or operator will comply with the requirements in Part II.B.1.b.” c. The owner or operator must be in receipt of an Authorization Letter to Disturb Greater Than Five Acres, which will include when the 16 Part I.E.6.c. authorization begins and ends and indicate a maximum area (acres) of soil disturbance allowed at any one time, from: i. NYSDEC, if Part I.E.6.a.i. or iii. apply; or ii. the Traditional Land Use Control MS4 Operator, if Part I.E.6.a.ii. applies. 7. Upon a finding of significant non-compliance with the practices described in the SWPPP or violation of this permit, NYSDEC may order an immediate stop to all construction activity at the site until the non-compliance is remedied. The stop work order must be in writing, describe the non-compliance in detail, and be sent to the owner or operator. 8. If any human remains or archaeological remains are encountered during excavation, the owner or operator must immediately cease, or cause to cease, all construction activity in the area of the remains and notify the appropriate Regional Water Engineer (RWE).3 Construction activity shall not resume until written permission to do so has been received from the RWE. 9. To be authorized to implement modifications to the information previously submitted in the eNOI, the owner or operator must: a. notify NYSDEC via email at Stormwater_info@dec.ny.gov requesting access to update the eNOI; and b. update the eNOI to reflect the modifications and resubmit the eNOI in accordance with Part I.D.; and c. receive an updated LOA. 10.The eNOI, SWPPP, LOA, updated LOAs (when applicable), and inspection reports required by this permit are public documents that the owner or operator must make available for review and copying by any person within five business days of the owner or operator receiving a written request by any such person to review these documents. Copying of documents will be done at the requester’s expense. 3 The Regional Water Manager where a DEC Region does not have a RWE. 17 Part I.F. F. Permit Coverage for Discharges Authorized Under GP-0-20-001 When applicable: 1. Upon the effective date of this permit, an owner or operator of a construction activity, with coverage under GP-0-20-001, will have interim coverage under GP-0-25-001 for 45 calendar days starting on the effective date of GP-0-25- 001 so long as the owner or operator maintains compliance with all applicable requirements of this permit. 2. Within 30 calendar days of the effective date of this permit, the owner or operator, with coverage under GP-0-20-001, must submit a complete Request to Continue Coverage electronically using a NYSDEC approved form,4 which contains the information identified in Part I.F.3. below, if: a. the owner or operator continues to implement the SMP component in conformance with the technical standards in place at the time of initial project authorization; and b. the owner or operator will comply with all non-design requirements of GP- 0-25-001. 3. The Request to Continue Coverage form contains questions to: ensure eligibility requirements in Part I.A. have been met; verify owner or operator contact information; verify the permit identification number; verify the original eNOI submission ID, if applicable; verify Part I.F.2.a. and b.; verify the version of the Design Manual that the technical/design components conform to; and receive an updated Owner/Operator Certification Form, Appendix I. 4. The owner or operator has obtained continued coverage under GP-0-25-001 as of the date indicated in the LOCC, which is sent by NYSDEC after a complete Request to Continue Coverage form is submitted. 5. If the owner or operator does not submit the Request to Continue Coverage form in accordance with Part I.F.2. and 3., coverage under this permit is automatically terminated after interim coverage expires. 4 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 18 Part I.G. G. Change of Owner or Operator When applicable: 1. When property ownership changes, or when there is a change in operational control over the construction plans and specifications, the following process applies: a. The new owner or operator must meet the applicable prerequisites for submitting an eNOI in accordance with Part I.D.2.; and b. The new owner or operator must submit an eNOI in accordance with Part I.D.3.; and c. Permit coverage for the new owner or operator will be effective upon receipt of the LOA in accordance with Part I.D.3.b.; and d. The new owner or operator, upon receipt of their LOA, must provide their Permit ID to the original owner or operator; and e. If the original owner or operator will no longer be the owner or operator of the construction activity identified in the original owner’s or operator’s eNOI, the original owner or operator, upon receipt of the new owner’s or operator’s Permit ID in accordance with Part I.G.1.d., must submit to NYSDEC a completed eNOT in accordance with Part V. that includes the name and Permit ID of the new owner or operator; or f. If the original owner or operator maintains ownership of a portion of the construction activity, the original owner or operator must maintain their coverage under the permit by modifying their eNOI; modifications to the eNOI must include: i. the revised area of disturbance and/or impervious area(s); and ii. the revised SMP information, if applicable; and iii. a narrative description of what has changed; and iv. the new owner’s or operator’s Permit ID for the portion of the project removed from the eNOI. Owners or operators must follow Part I.E.9. to modify the eNOI. 19 Part II. Part II. Water Quality-Based Effluent Limitations A. Maintaining Water Quality NYSDEC expects that compliance with the requirements of this permit will control discharges necessary to meet applicable water quality standards. It shall be a violation of the ECL for any discharge to either cause or contribute to a violation of the following water quality standards as contained in Parts 700 through 705 of Title 6 of the Official Compilation of Codes, Rules and Regulations of the State of New York: 1. There must be no increase in turbidity that will cause a substantial visible contrast to natural conditions; and 2. There must be no increase in suspended, colloidal or settleable solids that will cause deposition or impair the waters for their best usages; and 3. There must be no residue from oil and floating substances, nor visible oil film, nor globules of grease. If there is evidence indicating that the stormwater discharges authorized by this permit are causing, have the reasonable potential to cause, or are contributing to a violation of the water quality standard, the owner or operator must take appropriate corrective action in accordance with Part IV.C.5. of this permit and document in accordance with Part IV.C.4. of this permit. To address the water quality standard violation the owner or operator must include and implement appropriate controls in the SWPPP to correct the problem or obtain an individual SPDES permit. If, despite compliance with the requirements of this permit, it is demonstrated that the stormwater discharges authorized by this permit are causing or contributing to a violation of water quality standards, or if NYSDEC determines that a modification of this permit is necessary to prevent a violation of water quality standards, the authorized discharges will no longer be eligible for coverage under this permit, and the owner or operator must obtain an individual SPDES permit prior to further discharges from the construction site. B. Effluent Limitations Applicable to Discharges from Construction Activities Discharges authorized by this permit must achieve, at a minimum, the effluent limitations in Part II.B.1.a., b., c., d., and e. These limitations represent the 20 Part II.B. degree of effluent reduction attainable by the application of best practicable technology currently available. 1. Erosion and Sediment Control Requirements - The owner or operator must select, design, install, implement, and maintain control measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. The selection, design, installation, implementation, and maintenance of these control measures must meet the non-numeric effluent limitations in Part II.B.1.a., b., c., d., and e. and be in accordance with the New York State Standards and Specifications for Erosion and Sediment Control (BB), dated November 2016, using sound engineering judgment. Where control measures are not designed in conformance with the design criteria included in the technical standard, the owner or operator must include in SWPPP the reason(s) for the deviation, or alternative design, and provide information in the SWPPP demonstrating that the deviation or alternative design is equivalent to the technical standard. a. Erosion and Sediment Controls. At a minimum, erosion and sediment controls must be selected, designed, installed, implemented, and maintained to: i. Minimize soil erosion through application of runoff control and soil stabilization control measure to minimize pollutant discharges; and ii. Control stormwater discharges, including both peak flow rates and total stormwater volume, to minimize channel and streambank erosion and scour in the immediate vicinity of the discharge points; and iii. Minimize the amount of soil exposed during construction activity; and iv. Minimize the disturbance of steep slope; and v. Minimize sediment discharges from the site; and vi. Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas and maximize stormwater infiltration to reduce pollutant discharges, unless infeasible; and vii. Minimize soil compaction. Minimizing soil compaction is not required 21 Part II.B.1.a.vii. where the intended function of a specific area of the site dictates that it be compacted; and viii. Unless infeasible, preserve a sufficient amount of topsoil to complete soil restoration and establish a uniform, dense vegetative cover; and ix. Minimize dust. On areas of exposed soil, minimize dust through the appropriate application of water or other dust suppression techniques to control the generation of pollutants that could be discharged from the site. b. Soil Stabilization. In areas where soil disturbance activity has ceased, whether permanently or temporarily ceased, the application of soil stabilization measures must be initiated by the end of the next business day and completed within 14 calendar days from the date the current soil disturbance activity ceased. For construction sites that directly discharge to one of the 303(d) segments listed in Appendix D, or are located in one of the watersheds listed in Appendix C, or are authorized to disturb greater than five acres in accordance with Part I.E.5.a.viii., the application of soil stabilization measures must be initiated by the end of the next business day and completed within seven calendar days from the date the soil disturbance activity ceased. c. Dewatering. Discharges from dewatering activities, including discharges from dewatering of trenches and excavations, must be managed by appropriate control measures. d. Pollution Prevention Measures. Select, design, install, implement, and maintain effective pollution prevention measures to minimize the discharge of pollutants and prevent a violation of the water quality standards. At a minimum, such measures must be selected, designed, installed, implemented, and maintained to: i. Minimize the discharge of pollutants from equipment and vehicle washing, wheel wash water, and other wash waters. Soaps, detergents and solvents cannot be used; and ii. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, hazardous and toxic waste, and other materials present on the site to precipitation 22 Part II.B.1.d.ii. and to stormwater. Minimization of exposure is not required in cases where the exposure to precipitation and to stormwater will not result in a discharge of pollutants, or where exposure of a specific material or product poses little risk of stormwater contamination (such as final products and materials intended for outdoor use); and iii. Prevent the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures. e. Surface Outlets. When discharging from basins and impoundments, the surface outlets must be designed, constructed, and maintained in such a manner that sediment does not leave the basin or impoundment and that erosion at or below the outlet does not occur. C. Post-Construction Stormwater Management Practice (SMP) Requirements 1. The owner or operator of a construction activity that requires post- construction SMPs, in accordance with Part III.C., must select, design, install, implement, and maintain the SMPs to meet the performance criteria in the New York State Stormwater Management Design Manual, dated July 31, 2024 (DM), using sound engineering judgment. Where SMPs are not designed in conformance with the performance criteria in the DM, the owner or operator must include in the SWPPP the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. The owner or operator of a construction activity, that requires SMPs in accordance with Part III.C., must design the practices to meet the applicable sizing criteria in Part II.C.2.a., b., c., or d. a. Sizing Criteria for New Development i. Runoff Reduction Volume (RRv) and Water Quality Volume (WQv): 1. Reduce the total WQv by application of RR techniques and standard SMPs with RRv capacity. The total WQv must be calculated in accordance with the criteria in Section 4.2 of the DM; or 23 Part II.C.2.a.i.2. 2. Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the requirements in Part II.C.2.a.i.1. due to site limitations must direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv must be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.4 of the DM. The remaining portion of the total WQv that cannot be reduced must be treated by application of standard SMPs. ii. Channel Protection Volume (CPv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event, remaining after runoff reduction. Where a CPv control orifice is provided, the minimum orifice size must be 3 inches, with acceptable external trash rack or orifice protection. The CPv requirement does not apply when: 1. Reduction of the entire CPv is achieved by application of runoff reduction techniques or infiltration systems; or 2. The 1-year post-development peak discharge is less than or equal to 2.0 cfs without detention or velocity controls; or 3. The site directly discharges into a fifth order or larger water body (stream, river, or lake), or tidal waters, where the increase in smaller flows will not impact the stream bank or channel integrity. However, the point of discharge must be adequately protected against scour and erosion by the increased peak discharge. 24 Part II.C.2.a.iii. iii. Overbank Flood Control Criteria (Qp): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams, or 2. A downstream analysis reveals that overbank control is not required. iv. Extreme Flood Control Criteria (Qf): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams, or 2. A downstream analysis reveals that overbank control is not required. b. Sizing Criteria for New Development in Enhanced Phosphorus Removal Watersheds i. Runoff Reduction Volume (RRv) and Water Quality Volume (WQv): 1. Reduce the WQv by application of RR techniques and standard SMPs with RRv capacity. The total WQv is the runoff volume from the 1-year, 24-hour design storm over the post-developed watershed and must be calculated in accordance with the criteria in Section 4.3 of the DM; or 2. Minimum RRv and Treatment of Remaining Total WQv: Construction activities that cannot meet the criteria in Part II.C.2.b.i.1. due to site limitations must direct runoff from all newly constructed impervious areas to a RR technique or standard SMP with RRv capacity unless infeasible. The specific site limitations that prevent the reduction of 100% of the WQv must be documented in the SWPPP. For each impervious area that is not directed to a RR technique or standard SMP with RRv capacity, the SWPPP must include 25 Part II.C.2.b.i.2. documentation which demonstrates that all options were considered and for each option explains why it is considered infeasible. In no case shall the runoff reduction achieved from the newly constructed impervious areas be less than the Minimum RRv as calculated using the criteria in Section 4.5 of the DM. The remaining portion of the total WQv that cannot be reduced must be treated by application of standard SMPs. ii. Channel Protection Volume (CPv): Provide 24 hour extended detention of the post-developed 1-year, 24-hour storm event, remaining after runoff reduction. Where a CPv control orifice is provided, the minimum orifice size must be 3 inches, with acceptable external trash rack or orifice protection. The CPv requirement does not apply when: 1. Reduction of the entire CPv is achieved by application of runoff reduction techniques or infiltration systems; or 2. The 1-year post-development peak discharge is less than or equal to 2.0 cfs; or 3. The site directly discharges to tidal waters, or a fifth order or larger water body (stream, river, or lake) where the increase in smaller flows will not impact the stream bank or channel integrity. However, the point of discharge must be adequately protected against scour and erosion by the increased peak discharge. iii. Overbank Flood Control Criteria (Qp): Requires storage to attenuate the post-development 10-year, 24-hour peak discharge rate (Qp) to predevelopment rates. The Qp requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams; or 2. A downstream analysis reveals that overbank control is not required. 26 Part II.C.2.b.iv. iv. Extreme Flood Control Criteria (Qf): Requires storage to attenuate the post-development 100-year, 24-hour peak discharge rate (Qf) to predevelopment rates. The Qf requirement does not apply when: 1. the site directly discharges to tidal waters or fifth order or larger streams; or 2. A downstream analysis reveals that overbank control is not required. c. Sizing Criteria for Redevelopment Activity i. Water Quality Volume (WQv): The WQv treatment objective for redevelopment activity must be addressed by one of the following options, as outlined in Section 9.2.1. Redevelopment activities located in an Enhanced Phosphorus Removal Watershed (see Part III.B.3. and Appendix C) must calculate the WQv in accordance with Section 4.3 of the DM. All other redevelopment activities must calculate the WQv in accordance with Section 4.2 of the DM. 1. Reduce the existing impervious cover by a minimum of 25% of the total disturbed, impervious area. The Soil Restoration criteria in Section 5.1.6 of the DM must be applied to all newly created pervious areas; or 2. Capture and treat 100% of the required WQv, for a minimum of 25% of the disturbed redevelopment impervious area, by implementation of standard SMPs or reduced by application of runoff reduction techniques; or 3. Capture and treat 100% of the required WQv, for a minimum of 75% of the disturbed redevelopment impervious area, by implementation of a volume-based alternative SMP, as defined in Section 9.4 of the DM; or 4. Capture and treat 100% of the required WQv, for a minimum of 75% of the disturbed redevelopment impervious area, by implementation of a flow-through alternative SMP sized to treat the peak rate of runoff from the WQv design storm; or 27 Part II.C.2.c.i.5. 5. Application of a combination of 1 through 4 above that provide a weighted average of at least two of the above methods. Application of this method must be in accordance with the criteria in Section 9.2.1(A)(V) of the DM; or 6. If there is an existing SMP located on the site that captures and treats runoff from the impervious area that is being disturbed, the WQv treatment option selected must, at a minimum, provide treatment equal to the treatment that was being provided by the existing practice(s) if that treatment is greater than the treatment required by options 1 through 5 above. ii. Channel Protection Volume (CPv) is not required if there is 0% change to hydrology that increases the discharge rate and volume from the project site. iii. Overbank Flood Control (Qp) is not required if there is 0% change to hydrology that increases the discharge rate from the project site. iv. Extreme Flood Control (Qf) is not required if there is 0% change to hydrology that increases the discharge rate from the project site. d. Sizing Criteria for Combination of Redevelopment Activity and New Development Construction projects, that include both new development and redevelopment activity, must use SMPs that meet the sizing criteria calculated as an aggregate of the sizing criteria in Part II.C.2.a. or b. for the new development portion of the project and Part II.C.2.c. for the redevelopment activity portion of the project. Part III. Stormwater Pollution Prevention Plan (SWPPP) A. General SWPPP Requirements 1. A SWPPP must be prepared and implemented by the owner or operator of all construction activity covered by this permit. All authorized discharges must be identified in the SWPPP. The SWPPP must document the selection, design, installation, implementation and maintenance of the control measures and 28 Part III.A.1. practices that will be used to meet the effluent limitations in Part II.B. and, where applicable, the SMP requirements in Part II.C. 2. The SWPPP must demonstrate consideration in narrative format of the future physical risks due to climate change pursuant to the Community Risk and Resiliency Act (CRRA), 6 NYCRR Part 490, and associated guidance. a. The owner or operator must consider: i. the following physical risks due to climate change: (i) increasing temperature; and (ii) increasing precipitation; and (iii) increasing variability in precipitation, including chance of drought; and (iv) increasing frequency and severity of flooding; and (v) rising sea level; and (vi) increasing storm surge; and (vii) shifting ecology. ii. for each of the following: (i) overall site planning; and (ii) location, elevation, and sizing of: a. control measures and practices; and b. conveyance system(s); and c. detention system(s). 3. The SWPPP must describe the erosion and sediment control practices and where required, SMPs that will be used and/or constructed to reduce the pollutants in stormwater discharges and to assure compliance with the 29 Part III.A.3. requirements of this permit. In addition, the SWPPP must identify potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges. 4. All SWPPPs, that require the SMP component in accordance with Part III.B.2., must be prepared by a qualified professional. 5. The owner or operator must keep the SWPPP current so that, at all times, it accurately documents the erosion and sediment control practices that are being used or will be used during construction, and all SMPs that will be constructed on the site. At a minimum, the owner or operator must modify the SWPPP, including construction drawings: a. whenever the current provisions prove to be ineffective in minimizing pollutants in stormwater discharges from the site; and b. whenever there is a change in design, construction, or operation at the construction site that has or could have an effect on the discharge of pollutants; and c. to address issues or deficiencies identified during an inspection by the qualified inspector, NYSDEC, or other regulatory authority; and d. to document the final construction conditions in an as-built drawing. 6. NYSDEC may notify the owner or operator at any time that the SWPPP does not meet one or more of the minimum requirements of this permit. The notification must be in writing and identify the provisions of the SWPPP that require modification. Within fourteen (14) calendar days of such notification, or as otherwise indicated by NYSDEC, the owner or operator must make the required changes to the SWPPP and submit written notification to NYSDEC that the changes have been made. If the owner or operator does not respond to NYSDEC’s comments in the specified time frame, NYSDEC may suspend the owner’s or operator’s coverage under this permit or require the owner or operator to obtain coverage under an individual SPDES permit in accordance with Part II.D.4. 7. Prior to the commencement of construction activity, the owner or operator must identify the contractor(s) and subcontractor(s) that will be responsible for installing, constructing, repairing, replacing, inspecting, and maintaining the erosion and sediment control practices included in the SWPPP and the 30 Part III.A.7. contractor(s) and subcontractor(s) that will be responsible for constructing the SMPs included in the SWPPP. The owner or operator must have each of the contractors and subcontractors identify at least one person from their company to be trained contractor that will be responsible for implementation of the SWPPP. The owner or operator must ensure that at least one trained contractor is on site daily when soil disturbance activities are being performed. The owner or operator must have each of the contractors and subcontractors identified above sign a copy of the following certification statement below before the commencement of construction activities: "I hereby certify under penalty of law that I understand and agree to comply with the requirements of the SWPPP and agree to implement any corrective actions identified by the qualified inspector during a site inspection. I also understand that the owner or operator must comply with the requirements of the most current version of the New York State Pollutant Discharge Elimination System (SPDES) Construction General Permit (CGP) for Stormwater Discharges from Construction Activities and that it is unlawful for any person to cause or contribute to a violation of water quality standards. Furthermore, I am aware that there are significant penalties for submitting false information, that I do not believe to be true, including the possibility of fine and imprisonment for knowing violations" In addition to providing the certification statement above, the certification page must also identify the specific elements of the SWPPP that each contractor and subcontractor will be responsible for and include the name and title of the person providing the signature; the name and title of the trained contractor responsible for SWPPP implementation; the name, address and telephone number of the contracting firm; the address (or other identifying description) of the site; and the date the certification statement is signed. The owner or operator must attach the certification statement(s) to the copy of the SWPPP that is maintained at the construction site. If new or additional contractors are hired to implement measures identified in the SWPPP after the commencement of construction activities, they must also sign the certification statement and provide the information listed above prior to performing construction activities. 31 Part III.B. B. Required SWPPP Contents 1. Erosion and sediment control component - The owner or operator must prepare a SWPPP that includes erosion and sediment control practices. a. Erosion and sediment control practices must be designed: i. in conformance with the BB; or ii. equivalent to the BB if deviating from Part III.B.1.a.i. b. If the erosion and sediment control practices are designed in conformance with Part III.B.1.a.ii., the SWPPP must include a demonstration of equivalence to the BB. c. At a minimum, the erosion and sediment control component of the SWPPP must include the following: i. Background information about the scope of the project, including the location, type and size of project; and ii. A site map/construction drawing(s) with north arrows for the project, including a general location map. At a minimum, the site map must show the total site area; all improvements; areas of disturbance; areas that will not be disturbed; existing vegetation; on-site and adjacent off-site surface water(s); floodplain/floodway boundaries; wetlands and drainage patterns that could be affected by the construction activity; existing and final contours; locations of different soil types with boundaries; material, waste, borrow or equipment storage areas located on adjacent properties; and location(s) of the stormwater discharge(s) and receiving surface water(s); and iii. A description of the soil(s) present at the site, including an identification of the Hydrologic Soil Group (HSG); and iv. A phasing plan for the project and sequencing plans for all phases, both of which must address clearing and grubbing, excavation and grading, utility and infrastructure installation, final stabilization, 32 Part III.B.1.c.iv. and any other construction activity at the site that will result in soil disturbance. 1. The phasing plan must include: a. a map delineating and labeling the limits of soil disturbance for all phases of a project; and b. a table identifying the order and intended schedule of when each phase will begin and end its sequencing plan. The table must identify the total disturbed area for each phase at any one time and the total disturbed area for the overall project at any one time all on one timeline showing all overlapping quantities of disturbed area at any one time; and 2. A sequencing plan for a specific phase must include: a. a table indicating the order and intended schedule of construction activities within a phase, and corresponding construction drawings with a description of the work to be performed; and b. all permanent and temporary stabilization measures; and v. A description of the minimum erosion and sediment control practices to be installed or implemented for each construction activity that will result in soil disturbance. Include a schedule that identifies the timing of initial placement or implementation of each erosion and sediment control practice and the minimum time frames that each practice should remain in place or be implemented; and vi. A site map/construction drawing(s) showing the specific location(s), size(s), and length(s) of each erosion and sediment control practice; and vii. The dimensions, material specifications, installation details, and operation and maintenance requirements for all erosion and sediment control practices. Include the location and sizing of any 33 Part III.B.1.c.vii. temporary sediment basins and structural practices that will be used to divert flows from exposed soils; and viii. A maintenance inspection schedule for the contractor(s) and subcontractor(s) identified in Part III.A.7. to ensure continuous and effective operation of the erosion and sediment control practices. The maintenance inspection schedule must be in accordance with the requirements in the BB technical standard; and ix. A description of the pollution prevention measures that will be used to control litter, construction chemicals and construction debris from becoming a pollutant source in the stormwater discharges; and x. A description and location of any stormwater discharges associated with industrial activity other than construction at the site, including, but not limited to, stormwater discharges from asphalt plants and concrete plants located on the construction site; and xi. Identification of any elements of the design that are not in conformance with the design criteria in the BB technical standard. Include the reason for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the technical standard. 2. SMP component – The owner or operator of construction activity identified in Table 2 of Appendix B must prepare a SWPPP that includes SMPs. a. SMPs must be designed in conformance with the applicable sizing criteria in Part II.C.2.a., c., or d.; and b. SMPs must be designed in conformance with the performance criteria: i. in the DM; or ii. equivalent to the DM if deviating from Part III.B.2.b.i.; or iii. in the New York State Stormwater Management Design Manual, dated January 2015 (2015 Design Manual), or equivalent to it, if the following criteria are met: 34 Part III.B.2.b.iii.1. 1. The eNOI is submitted in accordance with Part I.D. before January 29, 2027 for construction activities that are either: a. subject to governmental review and approval: i. where the owner or operator made any application to that governmental entity prior to the effective date of this permit; and ii. such application included a SWPPP developed using the 2015 Design Manual or equivalent to it; or b. not subject to governmental review and approval: i. where a fiscal allocation for the construction activities has been developed and approved by a governmental entity; and ii. the SWPPP was developed using the 2015 Design Manual or equivalent to it; and c. If SMPs are designed in conformance with Part III.B.2.b.ii., the SWPPP must include the reason(s) for the deviation or alternative design and a demonstration of equivalence to the DM; and d. If SMPs are designed in conformance with Part III.B.2.b.iii., the SWPPP must include supporting information or documentation demonstrating that Part III.B.2.b.iii.1.a. or b. apply; and e. The SMP component of the SWPPP must include the following: i. Identification of all SMPs to be constructed as part of the project, including which option the SMP designs conform to, either Part III.B.2.b.i., ii., or iii. Include the dimensions, material specifications and installation details for each SMP; and ii. A site map/construction drawing(s) showing the specific location and size of each SMP; and 35 Part III.B.2.e.iii. iii. A Stormwater Modeling and Analysis Report that includes: (i) Map(s) showing pre-development conditions, including watershed/subcatchments boundaries, flow paths/routing, and design points; and (ii) Map(s) showing post-development conditions, including watershed/subcatchments boundaries, flow paths/routing, design points and SMPs; and (iii) Results of stormwater modeling (i.e. hydrology and hydraulic analysis) for the required storm events. Include supporting calculations (model runs), methodology, and a summary table that compares pre- and post-development runoff rates and volumes for the different storm events; and (iv) Summary table, with supporting calculations, which demonstrates that each SMP has been designed in conformance with the sizing criteria included in the DM; and (v) Identification of any sizing criteria that is not required based on the requirements included in Part II.C.; and (vi) Identification of any elements of the design that are not in conformance with the performance criteria in the DM. Include the reason(s) for the deviation or alternative design and provide information which demonstrates that the deviation or alternative design is equivalent to the DM. iv. Soil testing results and locations (test pits, borings); and v. Infiltration test results, when required in accordance with Part III.B.2.a.; and vi. An operations and maintenance plan that includes inspection and maintenance schedules and actions to ensure continuous and effective operation of each SMP. The plan must identify the entity 36 Part III.B.2.e.vi. that will be responsible for the long-term operation and maintenance of each practice; and 3. Enhanced Phosphorus Removal Standards - The owner or operator of construction activity identified in Table 2 of Appendix B that is located in a watershed identified in Appendix C must prepare a SWPPP that includes SMPs designed in conformance with the applicable sizing criteria in Part II.C.2.b., c., or d. and the performance criteria Enhanced Phosphorus Removal Standards included in the DM. At a minimum, the SMP component of the SWPPP must meet the requirements of Part III.B.2. C. Required SWPPP Components by Project Type Owners or operators of construction activities, identified in Table 1 of Appendix B, are required to prepare a SWPPP that only includes erosion and sediment control practices designed in accordance with Part III.B.1. Owners or operators of the construction activities, identified in Table 2 of Appendix B, must prepare a SWPPP that also includes SMPs designed in accordance with Part III.B.2 or 3. For the entire area of disturbance, including the entire common plan of development or sale if applicable, the owner or operator must evaluate every bullet from Appendix B Table 1 and Table 2 separately. If bullets from both Table 1 and Table 2 apply, the SWPPP must include erosion and sediment control practices for all construction activities but SMPs for only those portions of the construction activities that fall under Table 2 bullet(s). Part IV. Inspection and Maintenance Requirements A. General Construction Site Inspection and Maintenance Requirements 1. The owner or operator must ensure that all erosion and sediment control practices (including pollution prevention measures), and all SMPs identified in the SWPPP, are inspected and maintained in accordance with Part IV.B. and C. B. Contractor Maintenance Inspection Requirements 1. The owner or operator of each construction activity, identified in Tables 1 and 2 of Appendix B, must have a trained contractor inspect the erosion and sediment control practices and pollution prevention measures being 37 Part IV.B.1. implemented within the active work area daily to ensure that they are being maintained in effective operating condition at all times. If deficiencies are identified, the contractor must: a. if the corrective action does not require engineering design: i. begin implementing corrective actions within one business day; and ii. complete the corrective actions within five business days; or b. if the corrective action requires engineering design: i. begin the engineering design process within five business days; and ii. complete the corrective action in a reasonable time frame but no later than within 60 calendar days. 2. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the trained contractor can stop conducting the maintenance inspections in accordance with Part IV.B.1. The trained contractor must begin conducting the maintenance inspections in accordance with Part IV.B.1. as soon as soil disturbance activities resume. 3. For construction sites where soil disturbance activities have been shut down with partial project completion, the trained contractor can stop conducting the maintenance inspections in accordance with Part IV.B.1. if all areas disturbed as of the project shutdown date have achieved final stabilization and all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. C. Qualified Inspector Inspection Requirements 1. With the exception of the following construction activities identified in Tables 1 and 2 of Appendix B, a qualified inspector must conduct site inspections for all other construction activities identified in Tables 1 and 2 of Appendix B: a. the construction of a single-family residential subdivision with 25% or less impervious cover at total site build-out that involves a soil disturbance of one (1) or more acres of land but less than or equal to five (5) acres and is 38 Part IV.C.1.a. not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D; and b. the construction of a single-family home that involves soil disturbances of one (1) or more acres but less than or equal to five (5) acres and is not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D; and c. construction on agricultural property that involves soil disturbances of one (1) or more acres but less than five (5) acres; and d. construction activities located in the New York City Watershed located east of the Hudson River, see Appendix C Figure 1, that involve soil disturbances of 5,000 square feet or more, but less than one acre. 2. The qualified inspector must conduct site inspections in accordance with the following timetable: a. For construction sites where soil disturbance activities are on-going, the qualified inspector must conduct a site inspection at least once every seven (7) calendar days; or b. For construction sites where soil disturbance activities are on-going and the owner or operator has received authorization in accordance with Part I.E.6. to disturb greater than five (5) acres of soil at any one time, the qualified inspector must conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections must be separated by a minimum of two (2) full calendar days; or c. For construction sites where soil disturbance activities have been temporarily suspended (e.g. winter shutdown) and temporary stabilization measures have been applied to all disturbed areas, the qualified inspector must conduct a site inspection at least once every thirty (30) calendar days. The owner or operator must notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix E) or, in areas under the jurisdiction of a Traditional Land Use Control MS4 Operator, the Traditional Land Use Control MS4 Operator (provided the Traditional Land Use Control MS4 Operator is not the owner or operator of the construction activity) by hard copy or email prior to reducing the inspections to this frequency and again by hard copy or email prior to re-commencing construction; or 39 Part IV.C.2.d. d. For construction sites where soil disturbance activities have been shut down with partial project completion, the requirement to have the qualified inspector conduct inspections ceases if all areas disturbed as of the project shutdown date have achieved final stabilization and all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational. The owner or operator must notify the DOW Water (SPDES) Program contact at the Regional Office (see contact information in Appendix E) or, in areas subject to the review authority of Traditional Land Use Control MS4 Operator(s) in accordance with Part I.D.2.b.ii.1., the Traditional Land Use Control MS4 Operator(s) (provided the Traditional Land Use Control MS4 Operator(s) are not the owners or operators of the construction activity) in writing prior to the shutdown and again in writing prior to resuming construction activity. If soil disturbance activities are not resumed within 2 years from the date of shutdown, the owner or operator must terminate coverage by meeting the requirements of Part V; or e. For construction sites involving soil disturbance of one (1) or more acres that directly discharge to one of the 303(d) segments listed in Appendix D or is located in one of the watersheds listed in Appendix C, the qualified inspector must conduct at least two (2) site inspections every seven (7) calendar days. The two (2) inspections must be separated by a minimum of two (2) full calendar days. 3. At a minimum, the qualified inspector must inspect: a. all erosion and sediment control practices and pollution prevention measures to ensure integrity and effectiveness; and b. all SMPs under construction to ensure that they are constructed in conformance with the SWPPP; and c. all areas of disturbance that have not achieved final stabilization; and d. all points of discharge to surface waters of the State located within, or immediately adjacent to, the property boundaries of the construction site; and e. all points of discharge from the construction site. 40 Part IV.C.4. 4. The qualified inspector must prepare an inspection report subsequent to each and every inspection. At a minimum, the inspection report must include and/or address all of the following, for all construction activities except those listed in Part IV.C.1.: a. Permit identification number; and b. Date and time of inspection; and c. Name and title of person(s) performing inspection; and d. A description of the weather and soil conditions (e.g. dry, wet, saturated) at the time of the inspection, including the temperature at the time of the inspection; and e. A description of the condition of the runoff at all points of discharge from the construction site. This must include identification of any discharges of sediment from the construction site. Include discharges from conveyance systems (i.e. pipes, culverts, ditches, etc.) and overland flow; and f. A description of the condition of all surface waters of the State located within, or immediately adjacent to, the property boundaries of the construction site which receive runoff from disturbed areas. This must include identification of any discharges of sediment to the surface waters of the State; and g. Identification of all erosion and sediment control practices and pollution prevention measures that need repair or maintenance; and h. Identification of all erosion and sediment control practices and pollution prevention measures that were not installed properly or are not functioning as designed and need to be reinstalled or replaced; and i. Description and sketch (map) of areas with active soil disturbance activity, areas that have been disturbed but are inactive at the time of the inspection, and areas that have been stabilized (temporary and/or final) since the last inspection; and j. Estimates, in square feet or acres, of the following areas: 41 Part IV.C.4.j.i. i. Total area with active soil disturbance (not requiring either temporary stabilization or final stabilization); and ii. Total area with inactive soil disturbance (requiring either temporary stabilization or final stabilization); and iii. Total area that has achieved temporary stabilization; and iv. Total area that has achieved final stabilization; and k. Current stage of construction of all SMPs and identification of all construction activity on site that is not in conformance with the SWPPP and technical standards; and l. Corrective action(s) that must be taken to install, repair, replace or maintain erosion and sediment control practices and pollution prevention measures; and to correct deficiencies identified with the construction of the SMP(s); and m. Identification and status of all corrective actions that were required by previous inspection; and n. Digital photographs, with date stamp, that clearly show the condition of all practices that have been identified as needing corrective actions. The qualified inspector must attach color copies of the digital photographs to the inspection report being maintained onsite within seven (7) calendar days of the date of the inspection. The qualified inspector must also take digital photographs, with date stamp, that clearly show the condition of the practice(s) after the corrective action has been completed. The qualified inspector must attach paper color copies of the digital photographs to the inspection report that documents the completion of the corrective action work within seven (7) calendar days of that inspection. 5. Within one business day of the completion of an inspection, the qualified inspector must notify the owner or operator, and appropriate contractor or subcontractor identified in Part III.A.7., of any corrective actions that need to be taken. The contractor or subcontractor must: a. if the corrective action does not require engineering design: 42 Part IV.C.5.a.i. i. begin implementing corrective actions within one business day; and ii. complete the corrective actions within five business days; or b. if the corrective action requires engineering design: i. begin the engineering design process within five business days; and ii. complete the corrective action in a reasonable time frame but no later than within 60 calendar days. 6. All inspection reports must be signed by the qualified inspector. In accordance with Part I.E.3., the inspection reports must be maintained on site with the SWPPP. Part V. How to Terminate CGP Coverage A. Electronic Notice of Termination (eNOT) Submittal The eNOT contains questions to ensure requirements in Part V.A. have been met. 1. An owner or operator must terminate coverage when one or more of the following requirements have been met: a. Total project completion: i. all construction activity identified in the SWPPP has been completed; and ii. all areas of disturbance have achieved final stabilization; and iii. all temporary, structural erosion and sediment control measures have been removed; and iv. all SMPs have been constructed in conformance with the SWPPP and are operational; and v. an as-built drawing has been prepared; or 43 Part V.A.1.b. b. Planned shutdown with partial project completion: i. all soil disturbance activities have ceased; and ii. all areas disturbed as of the project shutdown date have achieved final stabilization; and iii. all temporary, structural erosion and sediment control measures have been removed; and iv. all SMPs required for the completed portion of the project have been constructed in conformance with the SWPPP and are operational; and v. an as-built drawing has been prepared; or c. In accordance with Part I.G. Change of Owner or Operator; or d. The owner or operator has obtained coverage under an alternative general SPDES permit or an individual SPDES permit. 2. For construction activities that require qualified inspector inspections in accordance with Part IV.C.1. and have met Part V.A.1.a. or b., the owner or operator must have the qualified inspector perform a final site inspection prior to submitting the eNOT. The qualified inspector must, by signing the “Final Stabilization” and “Post-Construction Stormwater Management Practice(s)” certification statements on the eNOT, certify that all the requirements in Part V.A.1.a. or b. have been achieved. 3. For construction activities that are subject to the review authority of Traditional Land Use Control MS4 Operator(s) in accordance with Part I.D.2.b.ii.1. and meet Part V.A.1.a. or b., the owner or operator must have the Traditional Land Use Control MS4 Operator(s) sign the “MS4 Acceptance” statement on the eNOT in accordance with the requirements in Part VII.J. A Traditional Land Use Control MS4 Operator official, by signing this statement, determined that it is acceptable for the owner or operator to submit the eNOT in accordance with the requirements of this Part. A Traditional Land Use Control MS4 Operator can make this determination by performing a final site inspection themselves or by accepting the qualified inspector’s final site inspection certification(s) when required in Part V.A.2. 44 Part V.A.4. 4. For construction activities that require SMPs and meet Part V.A.1.a. or b., the owner or operator must, prior to submitting the eNOT, ensure one of the following: a. for SMP(s) that were constructed by a private entity, but will be owned, operated, and maintained by a public entity, the SMP(s) and any right-of- way(s) needed to operate and maintain such practice(s) have been deeded to the municipality in which the practice(s) is located; or b. for SMP(s) that are privately owned, but will be operated and maintained by a public entity, an executed operation and maintenance agreement is in place with the municipality that will operate and maintain the SMP(s); or c. for SMP(s) that are privately owned, the owner or operator has a mechanism in place that requires operation and maintenance of the practice(s) in accordance with the operation and maintenance plan, such as a deed covenant in the owner or operator’s deed of record; or d. for SMP(s) that are owned by a public or private institution (e.g. school, university, hospital), government agency or authority, or public utility, the owner or operator has policies and procedures in place that ensure operation and maintenance of the practices in accordance with the operation and maintenance plan. 5. An owner or operator that has met the requirements of Part V.A.1., 2., 3., and 4. must request termination of coverage under this permit by submitting a complete Notice of Termination form electronically using a NYSDEC approved form.5 a. The owner’s or operator’s coverage is terminated as of the termination date indicated in the Letter of Termination (LOT), which is sent by NYSDEC after a complete eNOT is submitted. 5 Unless NYSDEC grants a waiver in accordance with 40 CFR 127.15(c) or (d). All waiver requests must be submitted to Stormwater_info@dec.ny.gov or NYSDEC, Bureau of Water Permits, 625 Broadway, 4th Floor, Albany, New York 12233-3505. 45 Part VI. Part VI. Record Retention and Reporting A. Record Retention The owner or operator must retain a copy of the documents listed in Part I.E.3. and a copy of the LOT for a period of at least five years from the date that NYSDEC accepts a complete NOT submitted in accordance with Part V. B. Reporting Except for the eNOI, the signature forms associated with the eNOI, and the eNOT, all other written correspondence requested by NYSDEC, including individual permit applications, must be sent to the address of the appropriate DOW (SPDES) Program contact at the Regional Office listed in Appendix E. Part VII. Standard Permit Requirements For the purposes of this permit, examples of contractors and subcontractors include: third-party maintenance and construction contractors. A. Duty to Comply The owner or operator, and all contractors or subcontractors, must comply with all requirements of this permit. Any non-compliance with the requirements of this permit constitutes a violation of the New York State Environmental Conservation Law (ECL), and its implementing regulations, and is grounds for enforcement action. Filing of a request for termination of coverage under this permit, or a notification of planned changes or anticipated non-compliance, does not limit, diminish or stay compliance with any requirements of this permit. B. Need to Halt or Reduce Activity Not a Defense The necessity to halt or reduce the construction activity regulated by this permit, in order to maintain compliance with the requirements of this permit, must not be a defense in an enforcement action. C. Penalties There are substantial criminal, civil, and administrative penalties associated with violating the requirements of this permit. Fines of up to $37,500 per day for each 46 Part VII.C. violation and imprisonment for up to 15 years may be assessed depending upon the nature and degree of the offense. D. False Statements Any person who knowingly makes any false material statement, representation, or certification in any application, record, report, or other document filed or required to be maintained under this permit, including monitoring reports or reports of compliance or noncompliance must, upon conviction, be punished in accordance with ECL §71-1933 and or New York State Penal Law Articles 175 and 210. E. Re-Opener Clause Upon issuance of this permit, a determination has been made on the basis of a submitted Notice of Intent, plans, or other available information, that compliance with the specified permit requirements will reasonably protect classified water use and assure compliance with applicable water quality standards. Satisfaction of the requirements of this permit notwithstanding, if operation pursuant to this permit causes or contributes to a condition in contravention of State water quality standards or guidance values, or if NYSDEC determines that a modification is necessary to prevent impairment of the best use of the waters or to assure maintenance of water quality standards or compliance with other provisions of ECL Article 17 or the Clean Water Act (CWA), or any regulations adopted pursuant thereto, NYSDEC may require such modification and the Commissioner may require abatement action to be taken by the owner or operator and may also prohibit such operation until the modification has been implemented. F. Duty to Mitigate The owner or operator, and its contractors and subcontractors, must take all reasonable steps to minimize or prevent any discharge in violation of this permit which has a reasonable likelihood of adversely affecting human health or the environment. G. Requiring Another General Permit or Individual SPDES Permit NYSDEC may require any owner or operator authorized to discharge in accordance with this permit to apply for and obtain an individual SPDES permit or apply for authorization to discharge in accordance with another general SPDES permit. 1. Cases where an individual SPDES permit or authorization to discharge in accordance with another general SPDES permit may be required include, but is not limited to the following: 47 Part VII.G.1.a. a. the owner or operator is not in compliance with the conditions of this permit or does not meet the requirements for coverage under this permit; and b. a change has occurred in the availability of demonstrated technology or practices for the control or abatement of pollutants applicable to the point source; and c. new effluent limitation guidelines or new source performance standards are promulgated that are applicable to point sources authorized to discharge in accordance with this permit; and d. existing effluent limitation guidelines or new source performance standards that are applicable to point sources authorized to discharge in accordance with this permit are modified; and e. a water quality management plan containing requirements applicable to such point sources is approved by NYSDEC; and f. circumstances have changed since the time of the request to be covered so that the owner or operator is no longer appropriately controlled under this permit, or either a temporary or permanent reduction or elimination of the authorized discharge is necessary; and g. the discharge is in violation of section 17-0501 of the ECL; and h. the discharge(s) is a significant contributor of pollutants. In making this determination, NYSDEC may consider the following factors: i. the location of the discharge(s) with respect to surface waters of the State; and ii. the size of the discharge(s); and iii. the quantity and nature of the pollutants discharged to surface waters of the State; and iv. other relevant factors including compliance with other provisions of ECL Article 17, or the CWA. 2. When NYSDEC requires any owner or operator authorized by this permit to apply for an individual SPDES permit as provided for in this subdivision, it must notify the owner or operator in writing that a permit application is required. This notice must include a brief statement of the reasons for this decision, an application 48 Part VII.G.2. form, a statement setting a time for the owner or operator to file the application for an individual SPDES permit, and a deadline, not sooner than 180 days from the owner’s or operator's receipt of the notification letter, whereby the authorization to discharge under this permit must be terminated. NYSDEC may grant additional time upon demonstration, to the satisfaction of the RWE,6 that additional time to apply for an alternative authorization is necessary or where NYSDEC has not provided a permit determination in accordance with 6 NYCRR Part 621. 3. When an individual SPDES permit is issued to an owner or operator authorized to discharge under this permit for the same discharge(s), this permit authorization for construction activities authorized under the individual SPDES permit is automatically terminated on the effective date of the individual SPDES permit unless termination is earlier in accordance with 6 NYCRR Part 750. H. Duty to Provide Information The owner or operator must furnish to NYSDEC, within five business days, unless otherwise set forth by NYSDEC, any information that NYSDEC may request to determine whether cause exists to determine compliance with this permit or to determine whether cause exists for requiring an individual SPDES permit in accordance with 6 NYCRR 750-1.21(e) (see Part VII.G. Requiring Another General Permit or Individual Permit). The owner or operator must make available to NYSDEC, for inspection and copying, or furnish to NYSDEC within 25 business days of receipt of a NYSDEC request for such information, any information retained in accordance with this permit. Except for Part I.D.4. and 5. and Part I.G., the following applies: where the owner or operator becomes aware that it failed to submit any relevant facts on the Notice of Intent, or submitted incorrect information in a Notice of Intent or in any report to NYSDEC, the owner or operator must submit such facts or corrected information to NYSDEC within five business days. I. Extension In the event a new permit is not issued and effective prior to the expiration of this permit, and this permit is extended pursuant to the State Administrative Procedure Act and 6 NYCRR Part 621, then the owner or operator with coverage under this permit may continue to operate and discharge in accordance with the requirements of this permit until a new permit is issued and effective. 6 The Regional Water Manager where a DEC Region does not have a RWE. 49 Part VII.J. J. Signatories and Certification The Notice of Intent, Notice of Termination, and reports required by this permit must be signed as provided in 40 CFR §122.22. 1. All Notices of Intent and Notices of Termination must be signed as follows: a. For a corporation. By a responsible corporate officer. For the purpose of this section, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy- or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production or operating facilities, provided, the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long term environmental compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for Notice of Intent or Notice of Termination requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. Note: NYSDEC does not require specific assignments or delegations of authority to responsible corporate officers identified in 40 CFR §122.22(a)(1)(i). NYSDEC will presume that these responsible corporate officers have the requisite authority to sign the Notice of Intent or Notice of Termination unless the corporation has notified NYSDEC to the contrary. Corporate procedures governing authority to sign a Notice of Intent or Notice of Termination may provide for assignment or delegation to applicable corporate positions under 40 CFR §122.22(a)(1)(ii) rather than to specific individuals. b. For a partnership or sole proprietorship. By a general partner or the proprietor, respectively. 50 Part VII.J.1.c. c. For a municipality, State, Federal, or other public agency. By either a principal executive officer or ranking elected official. For purposes of this section, a principal executive officer of a Federal agency includes: 1. the chief executive officer of the agency; or 2. a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency (e.g., Regional Administrators of EPA). 2. All reports required by this permit, and other information requested by NYSDEC, must be signed by a person described in Part VII.J.1., or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part VII.J.1. or using the Duly Authorized Form, found on the DEC website; and b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and c. The written authorization is submitted to NYSDEC. 3. Changes to authorization. If an authorization under Part VII.J.2. is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part VII.J.2. must be submitted to NYSDEC prior to or together with any reports, information, or applications to be signed by an authorized representative. 4. Certification. Any person signing a document under Part VII.J.1. or 2. must make the following certification: I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who 51 Part VII.J.4. manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. 5. Electronic reporting. If documents described in Part VII.J.1. or 2. are submitted electronically by or on behalf of the construction activity with coverage under this permit, any person providing the electronic signature for such documents must meet all relevant requirements of this section, and must ensure that all of the relevant requirements of 40 CFR Part 3 (including, in all cases, subpart D to Part 3) (Cross-Media Electronic Reporting) and 40 CFR Part 127 (NPDES Electronic Reporting Requirements) are met for that submission. K. Inspection and Entry The owner or operator must allow NYSDEC, the USEPA Regional Administrator, the applicable county health department, or any authorized representatives of those entities, or, in the case of a construction site which discharges through an MS4, an authorized representative of the MS4 receiving the discharge, upon the presentation of credentials and other documents as may be required by law, to: 1. enter upon the owner’s or operator's premises where a regulated facility or activity is located or conducted or where records must be kept under the requirements of this permit; and 2. have access to and copy at reasonable times, any records that must be kept under the requirements of this permit, including records required to be maintained for purposes of operation and maintenance; and 3. inspect at reasonable times any facilities, equipment (including monitoring and control equipment), practices or operations regulated or required under this permit; and 4. sample or monitor at reasonable times, for the purposes of assuring general SPDES permit compliance or as otherwise authorized by the CWA or ECL, any substances or parameters at any location; and 5. enter upon the property of any contributor to the regulated facility or activity under authority of the owner or operator. 52 Part VII.L. L. Confidentiality of Information The following must not be held confidential: this permit, the fact sheet for this permit, the name and address of any owner or operator, effluent data, the Notice of Intent, and information regarding the need to obtain an individual permit or an alternative general SPDES permit. This includes information submitted on forms themselves and any attachments used to supply information required by the forms (except information submitted on usage of substances). Upon the request of the owner or operator, NYSDEC must make determinations of confidentiality in accordance with 6 NYCRR Part 616, except as set forth in the previous sentence. Any information accorded confidential status must be disclosed to the Regional Administrator upon his or her written request. Prior to disclosing such information to the Regional Administrator, NYSDEC will notify the Regional Administrator of the confidential status of such information. M. Other Permits May Be Required Nothing in this permit relieves the owner or operator from a requirement to obtain any other permits required by law. N. NYSDEC Orders or Civil Decrees/Judgments The issuance of this permit by the NYSDEC, and the coverage under this permit by the owner or operator, does not supersede, revoke, or rescind any existing order on consent or civil Decree/Judgment, or modification to any such documents or to any order issued by the Commissioner, or any of the terms, conditions, or requirements contained in such order or modification therefore, unless expressly noted. O. Property Rights Coverage under this permit does not convey anypropertyrightsin either real or personal property, or any exclusive privileges, nor does it authorize any injury to private property or any invasion of personal rights, nor any infringement of Federal, State, or local laws or regulations, nor does it obviate the necessity of obtaining the assent of any other jurisdiction as required by law for the discharge authorized. P. Compliance with Interstate Standards If the construction activity covered by this permit originates within the jurisdiction of an interstate water pollution control agency, then the construction activity must also comply with any applicable effluent standards or water quality standards promulgated by that interstate agency and as set forth in this permit for such construction activities. 53 Part VII.Q. Q. Oil and Hazardous Substance Liability Coverage under this permit does not affect the imposition of responsibilities upon, or the institution of any legal action against, the owner or operator under section 311 of the CWA, which must be in conformance with regulations promulgated pursuant to section 311 governing the applicability of section 311 of the CWA to discharges from facilities with NPDES permits, nor must such issuance preclude the institution of any legal action or relieve the owner or operator from any responsibilities, liabilities, or penalties to which the owner or operator is or may be subject pursuant to the Comprehensive Environmental Response, Compensation and Liability Act of 1980, 42 U.S.C. section 9601 et seq. (CERCLA). R. Severability The provisions of this permit are severable, and if any provision of this permit, or the application of any provision of this permit to any circumstance, is held invalid, the application of such provision to other circumstances, and the remainder of this permit, must not be affected thereby. S. NYSDEC Approved Forms The owner or operator must provide all relevant information that is requested by NYSDEC, and required by this permit, on all NYSDEC approved forms. 54 Appendix A APPENDIX A – Abbreviations and Definitions Abbreviations APO – Agency Preservation Officer BB – New York State Standards and Specifications for Erosion and Sediment Control (Blue Book), dated November 2016 BMP – Best Management Practice CPESC – Certified Professional in Erosion and Sediment Control CPv – Channel Protection Volume CWA – Clean Water Act (or the Federal Water Pollution Control Act, 33 U.S.C. §1251 et seq) DM – New York State Stormwater Management Design Manual (Design Manual), dated July 31, 2024 DOW – Division of Water EAF – Environmental Assessment Form ECL – chapter 43-B of the Consolidated Laws of the State of New York, entitled the Environmental Conservation Law EPA – U.S. Environmental Protection Agency HSG – Hydrologic Soil Group MS4 – Municipal Separate Storm Sewer System NOI – Notice of Intent NOT – Notice of Termination NPDES – National Pollutant Discharge Elimination System NYC – The City of New York NYCDEP – The City of New York Department of Environmental Protection NYSDEC – The New York State Department of Environmental Conservation OPRHP – Office of Parks, Recreation and Historic Places Qf – Extreme Flood Qp – Overbank Flood RR – Runoff Reduction RRv – Runoff Reduction Volume RWE – Regional Water Engineer SEQR – State Environmental Quality Review Act SHPA – State Historic Preservation Act SMP – Post-Construction Stormwater Management Practice SPDES – State Pollutant Discharge Elimination System SWPPP – Stormwater Pollution Prevention Plan TMDL – Total Maximum Daily Load UPA – Uniform Procedures Act USDA – United States Department of Agriculture WQv – Water Quality Volume 55 Appendix A Definitions All definitions in this section are solely for the purposes of this permit. If a word is not italicized in the permit, use its common definition. Agricultural Building – a structure designed and constructed to house farm implements, hay, grain, poultry, livestock or other horticultural products; excluding any structure designed, constructed or used, in whole or in part, for human habitation, as a place of employment where agricultural products are processed, treated or packaged, or as a place used by the public. Agricultural Property – the land for construction of a barn, agricultural building, silo, stockyard, pen or other structural practices identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023). Alter Hydrology from Pre- to Post-Development Conditions – the post-development peak flow rate(s) has increased by more than 5% of the pre-developed condition for the design storm of interest (e.g. 10 yr and 100 yr). Combined Sewer System – a sewer system which conveys sewage and stormwater through a single pipe system to a publicly owned treatment works. Commence (Commencement of) Construction Activities – the initial disturbance of soils associated with clearing, grading or excavation activities; or other construction related activities that disturb or expose soils such as demolition, stockpiling of fill material, and the initial installation of erosion and sediment control practices required in the SWPPP. See definition for “Construction Activity(ies)” also. Common Plan of Development or Sale – a contiguous area where multiple separate and distinct construction activities are occurring, or may occur, under one plan. The “common plan” of development or sale is broadly defined as any announcement or piece of documentation (including a sign, public notice or hearing, marketing plan, advertisement, drawing, permit application, State Environmental Quality Review Act (SEQR) environmental assessment form or other documents, zoning request, computer design, etc.) or physical demarcation (including boundary signs, lot stakes, surveyor markings, etc.) indicating construction activities may occur on a specific plot. A common plan of development or sale is comprised of two or more phases. Common plan of development or sale does not include separate and distinct construction activities that are occurring, or may occur, under one plan that are at least 1/4 mile apart provided any interconnecting road, pipeline or utility project that is part of the same “common plan” is not concurrently being disturbed. 56 Appendix A Construction Activity(ies) – identified within 40 CFR 122.26(b)(14)(x), 122.26(b)(15)(i), and 122.26(b)(15)(ii), any clearing, grading, excavation, filling, demolition or stockpiling activities that result in soil disturbance. Clearing activities can include, but are not limited to, mechanized logging equipment operation, the cutting and skidding of trees, stump removal and/or brush root removal. Construction activity does not include routine maintenance that is performed to maintain the original line and grade, hydraulic capacity, or original purpose of a facility, which is excluded from the calculation of the soil disturbance for a project. Routine maintenance includes, but is not limited to: Re-grading of gravel roads or parking lots; and Cleaning and shaping of existing roadside ditches and culverts that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity of the ditch; and Replacement of existing culverts that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity of a ditch; and Replacement of existing bridges that maintains the approximate original line and grade, and maintains or improves the hydraulic capacity beneath the bridges; and Cleaning and shaping of existing roadside ditches that does not maintain the approximate original grade, hydraulic capacity and purpose of the ditch if the changes to the line and grade, hydraulic capacity or purpose of the ditch are installed to improve water quality and quantity controls (e.g. installing grass lined ditch); and Placement of aggregate shoulder backing that stabilizes the transition between the road shoulder and the ditch or embankment; and Full depth milling and filling of existing asphalt pavements, replacement of concrete pavement slabs, and similar work that does not expose soil or disturb the bottom six (6) inches of subbase material; and Long-term use of equipment storage areas at or near highway maintenance facilities; and Removal of sediment from the edge of the highway to restore a previously existing sheet-flow drainage connection from the highway surface to the highway ditch or embankment; and Existing use of Canal Corp owned upland disposal sites for the canal, and Replacement of curbs, gutters, sidewalks and guide rail posts; and Maintenance of ski trails including brush hog use and mowing; and Above ground snowmaking pipe replacement; and Replacement of existing utility poles; etc. Construction Site – the land area where construction activity(ies) will occur. See also the definitions for “Commence (Commencement of) Construction Activities” and “Common Plan of Development or Sale.” 57 Appendix A Dewatering – the act of draining rainwater and/or groundwater from building foundations, vaults or excavations/trenches. Directly Discharge(s)(ing) (to a specific surface waterbody) – runoff flows from a construction site by overland flow and the first point of discharge is the specific surface waterbody, or runoff flows from a construction site to a separate storm sewer system and the first point of discharge from the separate storm sewer system is the specific surface waterbody. Discharge(s)(d) – any addition of any pollutant to waters of the State through an outlet or point source. Embankment – an earthen or rock slope that supports a road/highway. Equivalent (Equivalence) – the practice or measure meets all the performance, longevity, maintenance, and safety objectives of the technical standard and will provide an equal or greater degree of water quality protection. Final Stabilization – all soil disturbance activities have ceased and a uniform, perennial vegetative cover with a density of eighty (80) percent over the entire pervious surface has been established; or other equivalent stabilization measures, such as permanent landscape mulches, rock rip-rap or washed/crushed stone have been applied on all disturbed areas that are not covered by permanent structures, concrete or pavement. Historic Property – any building, structure, site, object or district that is listed on the State or National Registers of Historic Places or is determined to be eligible for listing on the State or National Registers of Historic Places. Impervious Area (Cover) – all impermeable surfaces that cannot effectively infiltrate rainfall. This includes paved, concrete and compacted gravel surfaces (i.e. parking lots, driveways, roads, runways and sidewalks); building rooftops and miscellaneous impermeable structures such as patios, pools, and sheds. Infeasible – not technologically possible, or not economically practicable and achievable considering best industry practices. Minimize(ing)(ation) – reduce and/or eliminate to the extent achievable using control measures (including best management practices) that are technologically available and economically practicable and achievable in light of best industry practices. Municipal Separate Storm Sewer System (MS4) - a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): 58 Appendix A 1. owned or operated by a State, city, town, village, borough, county, parish, district, association, or other public body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under State law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under section 208 of the CWA, that discharges to surface waters of the State; and 2. designed or used for collecting or conveying stormwater; and 3. which is not a combined sewer system; and 4. which is not part of a Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.2. Natural Buffer(s) – an undisturbed area with natural cover running along a surface water (e.g. wetland, stream, river, lake, etc.). New Development – any land disturbance that does not meet the definition of Redevelopment Activity included in this appendix. New York State Erosion and Sediment Control Certificate Program – a certificate program that establishes and maintains a process to identify and recognize individuals who are capable of developing, designing, inspecting and maintaining erosion and sediment control plans on projects that disturb soils in New York State. The certificate program is administered by the New York State Conservation District Employees Association. Nonpoint Source(s) – any source of water pollution or pollutants which is not a discrete conveyance or point source permitted pursuant to Title 7 or 8 of Article 17 of the Environmental Conservation Law (see ECL Section 17-1403). Overbank – flow events that exceed the capacity of the stream channel and spill out into the adjacent floodplain. Owner or Operator – the person, persons, or legal entity which owns or leases the property on which the construction activity is occurring; an entity that has operational control over the construction plans and specifications, including the ability to make modifications to the plans and specifications; and/or an entity that has day-to-day operational control of those activities at a project that are necessary to ensure compliance with the permit requirements. 59 Appendix A Performance Criteria – the six performance criteria for each group of SMPs in Chapters 5 and 6 of the technical standard, New York State Stormwater Management Design Manual (DM), dated July 31, 2024. These include feasibility, conveyance, pretreatment, treatment, landscaping, and maintenance. It does not include the Sizing Criteria (i.e. WQv, RRv, CPv, Qp and Qf) in Part I.C.2. of the permit. Phase – a defined area in which construction activities are occurring or will occur separate from other defined area(s). Point Source – any discernible, confined, and discrete conveyance, including but not limited to any pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock, concentrated animal feeding operation, vessel or other floating craft, or landfill leachate collection system from which pollutants are or may be discharged. Pollutant(s) – dredged spoil, filter backwash, solid waste, incinerator residue, sewage, garbage, sewage sludge, munitions, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand and industrial, municipal, agricultural waste and ballast discharged into water; which may cause or might reasonably be expected to cause pollution of the waters of the state in contravention of the standards or guidance values adopted as provided in 6 NYCRR Parts 700 et seq. Qualified Inspector – a person that is knowledgeable in the principles and practices of erosion and sediment control, such as a licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder or other NYSDEC endorsed individual(s). It can also mean someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided that person has training in the principles and practices of erosion and sediment control. Training in the principles and practices of erosion and sediment control means that the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect has received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the individual working under the direct supervision of the licensed Professional Engineer or Registered Landscape Architect shall receive four (4) hours of training every three (3) years. It can also mean a person that meets the Qualified Professional qualifications in addition to the Qualified Inspector qualifications. Note: Inspections of any SMPs that include structural components, such as a dam for an impoundment, shall be performed by a licensed Professional Engineer. 60 Appendix A Qualified Professional – a person that is knowledgeable in the principles and practices of stormwater management and treatment, such as a licensed Professional Engineer, Registered Landscape Architect or other NYSDEC endorsed individual(s). Individuals preparing SWPPPs that require the SMP component must have an understanding of the principles of hydrology, water quality management practice design, water quantity control design, and, in many cases, the principles of hydraulics. All components of the SWPPP that involve the practice of engineering, as defined by the NYS Education Law (see Article 145), shall be prepared by, or under the direct supervision of, a professional engineer licensed to practice in the State of New York. Redevelopment Activity(ies) – the disturbance and reconstruction of existing impervious area, including impervious areas that were removed from a project site within five (5) years of preliminary project plan submission to the local government (i.e. site plan, subdivision, etc.). Renewable Energy – electricity or thermal energy generated by renewable energy systems through use of the following technologies: solar thermal, photovoltaics, on land and offshore wind, hydroelectric, geothermal electric, geothermal ground source heat, tidal energy, wave energy, ocean thermal, and fuel cells which do not utilize a fossil fuel resource in the process of generating electricity. Site Limitations – site conditions that prevent the use of an infiltration technique and or infiltration of the total WQv. Typical site limitations include: seasonal high groundwater, shallow depth to bedrock, and soils with an infiltration rate less than 0.5 inches/hour. The existence of site limitations shall be confirmed and documented using actual field testing (i.e. test pits, soil borings, and infiltration test) or using information from the most current United States Department of Agriculture (USDA) Soil Survey for the County where the project is located. Sizing Criteria – the criteria included in Part I.C.2 of the permit that are used to size SMPs. The criteria include; Water Quality Volume (WQv), Runoff Reduction Volume (RRv), Channel Protection Volume (Cpv), Overbank Flood (Qp), and Extreme Flood (Qf). Steep Slope – land area designated on the current United States Department of Agriculture (USDA) Soil Survey as Soil Slope Phase D, (provided the map unit name or description is inclusive of slopes greater than 25%), or Soil Slope Phase E or F, (regardless of the map unit name), or a combination of the three designations. Stormwater – that portion of precipitation that, once having fallen to the ground, is in excess of the evaporative or infiltrative capacity of soils, or the retentive capacity of surface features, which flows or will flow off the land by surface runoff to waters of the State. 61 Appendix A Streambank – the terrain alongside the bed of a creek or stream. The bank consists of the sides of the channel, between which the flow is confined. Stormwater Pollution Prevention Plan (SWPPP) – a project specific report, including construction drawings, that among other things: describes the construction activity(ies), identifies the potential sources of pollution at the construction site; describes and shows the stormwater controls that will be used to control the pollutants (i.e. erosion and sediment controls; for many projects, includes SMPs); and identifies procedures the owner or operator will implement to comply with the requirements of the permit. See Part III of the permit for a complete description of the information that must be included in the SWPPP. Surface Waters of the State – shall be construed to include lakes, bays, sounds, ponds, impounding reservoirs, springs, rivers, streams, creeks, estuaries, marshes, inlets, canals, the Atlantic ocean within the territorial seas of the state of New York and all other bodies of surface water, natural or artificial, inland or coastal, fresh or salt, public or private (except those private waters that do not combine or effect a junction with natural surface waters), which are wholly or partially within or bordering the state or within its jurisdiction. Waters of the state are further defined in 6 NYCRR Parts 800 to 941. Temporarily Ceased – an existing disturbed area will not be disturbed again within 14 calendar days of the previous soil disturbance. Temporary Stabilization – exposed soil has been covered with material(s) as set forth in the technical standard, New York Standards and Specifications for Erosion and Sediment Control, to prevent the exposed soil from eroding. The materials can include, but are not limited to, mulch, seed and mulch, and erosion control mats (e.g. jute twisted yarn, excelsior wood fiber mats). Total Maximum Daily Load (TMDL) – the sum of the allowable loads of a single pollutant from all contributing point and nonpoint sources. It is a calculation of the maximum amount of a pollutant that a waterbody can receive and still meet water quality standards, and an allocation of that amount to the pollutant's sources. A TMDL stipulates Waste Load Allocations (WLA) for point source discharges, Load Allocations (LA) for nonpoint sources, and a margin of safety (MOS). Traditional Land Use Control MS4 Operator – a city, town, or village with land use control authority that is authorized to discharge under New York State DEC’s SPDES General Permit For Stormwater Discharges from Municipal Separate Stormwater Sewer Systems (MS4s) or the City of New York’s Individual SPDES Permit for their Municipal Separate Storm Sewer Systems (NY-0287890). Trained Contractor – an employee from the contracting (construction) company, identified in Part III.A.7., that has received four (4) hours of NYSDEC endorsed training 62 Appendix A in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity. After receiving the initial training, the trained contractor shall receive four (4) hours of training every three (3) years. It can also mean an employee from the contracting (construction) company, identified in Part III.A.7., that meets the qualified inspector qualifications (e.g. licensed Professional Engineer, Certified Professional in Erosion and Sediment Control (CPESC), Registered Landscape Architect, New York State Erosion and Sediment Control Certificate Program holder, or someone working under the direct supervision of, and at the same company as, the licensed Professional Engineer or Registered Landscape Architect, provided they have received four (4) hours of NYSDEC endorsed training in proper erosion and sediment control principles from a Soil and Water Conservation District, or other NYSDEC endorsed entity). The trained contractor is responsible for the day-to-day implementation of the SWPPP. Tree Clearing – construction activities limited to felling and removal of trees. Tree clearing does not include hand felling and leaving the trees in place with no support from mechanized equipment, which is not considered construction activity requiring coverage under this permit. Water Quality Standard – such measures of purity or quality for any waters in relation to their reasonable and necessary use as promulgated in 6 NYCRR Part 700 et seq. 63 Appendix B APPENDIX B – Required SWPPP Components by Project Type Table 1 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities that involve soil disturbances of one (1) or more acres of land, but less than five (5) acres: • Single-family home not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D • Single-family residential subdivisions with 25% or less impervious cover at total site build-out and not located in one of the watersheds listed in Appendix C and not directly discharging to one of the 303(d) segments listed in Appendix D • Construction of a barn or other agricultural building, silo, stock yard or pen. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that include construction or reconstruction of impervious area or alter hydrology from pre- to post-development conditions. The following construction activities that involve soil disturbances between five thousand (5000) square feet and one (1) acre of land: • All construction activities located in the New York City Watershed located east of the Hudson River, see Appendix C Figure 1, that involve soil disturbances between five thousand (5,000) square feet and one (1) acre of land. Within the municipal boundaries of NYC: • Stand-alone road reconstruction, where the total soil disturbance from only that road construction, is less than one (1) acre of land. The following construction activities: • Installation of underground linear utilities; such as gas lines, fiber-optic cable, cable TV, electric, telephone, sewer mains, and water mains • Environmental enhancement projects, such as wetland mitigation, stormwater retrofits, stream restoration, and resiliency projects that reconstruct shoreline areas to address sea level rise • Pond construction • Linear bike paths running through areas with vegetative cover, including bike paths surfaced with an impervious cover • Cross-country ski trails, walking/hiking trails, and mountain biking trails, including a de minimis parking lot (maximum 10 spaces total, sized for passenger cars) with 35 feet minimum preservation of undisturbed area downgradient from the parking lot • Dam rehabilitation (the structure of the dam itself) • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are not part of residential, commercial, or institutional development; • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that include incidental shoulder or curb work along an existing highway to support construction of the sidewalk, bike path, or walking path. 64 Appendix B Table 1 (Continued) CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT ONLY INCLUDES EROSION AND SEDIMENT CONTROLS The following construction activities: • Slope stabilization • Slope flattening that changes the grade of the site, but does not significantly change the runoff characteristics • Spoil areas that will be covered with vegetation • Vegetated open space (i.e. recreational parks, lawns, meadows, fields, downhill ski trails) that do not alter hydrology from pre- to post-development conditions • Athletic fields (natural grass) that do not include the construction or reconstruction of impervious area and do not alter hydrology from pre- to post-development conditions • Demolition where vegetation will be established, and no redevelopment activity is planned1 • Installation or replacement of either an overhead electric transmission line or a ski lift tower that does not include the construction of permanent access roads or parking areas surfaced with impervious cover. • Solar array field areas that have tables elevated off the ground, spaced one table width apart, do not alter hydrology from pre- to post-development conditions, and address water quality volume and runoff reduction volume by maintaining sheet flow on slopes less than 8%. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that do not include construction or reconstruction of impervious area and do not alter hydrology from pre- to post-development conditions. • Temporary access roads, median crossovers, detour roads, lanes, or other temporary impervious areas that will be restored to pre-construction conditions once the construction activity is complete (in this context, “temporary” means the impervious area will be in place for two years or less) • Other construction activities that do not include the construction or reconstruction of impervious area, and do not alter hydrology from pre- to post-development conditions, and are not listed in Table 2. 1. If the site is redeveloped in the future, a new eNOI must be submitted. 65 Appendix B Table 2 CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES (SMPS) The following construction activities: • Single-family home located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix D • Single-family home that disturbs five (5) or more acres of land • Single-family residential subdivisions located in one of the watersheds listed in Appendix C or directly discharging to one of the 303(d) segments listed in Appendix D • Single-family residential subdivisions that involve soil disturbances of between one (1) and five (5) acres of land with greater than 25% impervious cover at total site build-out • Single-family residential subdivisions that involve soil disturbances of between 20,000 square feet and one (1) acre of land within the municipal boundaries of NYC with greater than 25% impervious cover at total site build-out • Single-family residential subdivisions that involve soil disturbances of five (5) or more acres of land, and single-family residential subdivisions that involve soil disturbances of less than five (5) acres that are part of a common plan of development or sale that will ultimately disturb five (5) or more acres of land • Multi-family residential developments; includes duplexes, townhomes, condominiums, senior housing complexes, apartment complexes, and mobile home parks • Creation of 5,000 square feet or more of impervious area in the municipal boundaries of NYC • Airports • Amusement parks • Breweries, cideries, and wineries, including establishments constructed on agricultural land • Campgrounds • Cemeteries that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre- to post-development conditions • Commercial developments • Churches and other places of worship • Construction of a barn or other agricultural building (e.g. silo) that involves soil disturbance greater than five acres. • Structural agricultural conservation practices as identified in Table II in the “Agricultural Best Management Practice Systems Catalogue” (dated June 2023) that involves soil disturbance greater than five acres and include the construction or reconstruction of impervious area or alter hydrology from pre- to post-development conditions. • Facility buildings, including ski lodges, restroom buildings, pumphouses, ski lift terminals, and maintenance and groomer garages • Institutional development; includes hospitals, prisons, schools and colleges • Industrial facilities; includes industrial parks • Landfills; including creation of landfills or capping landfills. • Municipal facilities; includes highway garages, transfer stations, office buildings, POTWs, water treatment plants, and water storage tanks • Golf courses • Office complexes 66 Appendix B Table 2 (Continued) CONSTRUCTION ACTIVITIES THAT REQUIRE THE PREPARATION OF A SWPPP THAT INCLUDES POST-CONSTRUCTION STORMWATER MANAGEMENT PRACTICES (SMPS) The following construction activities: • Permanent laydown yards and equipment storage lots • Playgrounds that include the construction or reconstruction of impervious area • Sports complexes • Racetracks; includes racetracks with earthen (dirt) surfaces • Road construction or reconstruction, outside the municipal boundaries of NYC • Road construction within the municipal boundaries of NYC • Stand-alone road reconstruction, within the municipal boundaries of NYC where the total soil disturbance from that road reconstruction involves soil disturbance of one (1) acre or more of land • Parking lot construction or reconstruction (as with all Table 2 bullets, this includes parking lots constructed as part of the construction activities listed in Table 1, unless a Table 1 bullet specifies otherwise) • Athletic fields (natural grass) that include the construction or reconstruction of impervious area (>5% of disturbed area) or alter the hydrology from pre- to post-development conditions • Athletic fields with artificial turf • Permanent access roads, parking areas, substations, compressor stations, and well drilling pads, surfaced with impervious cover, and constructed as part of an overhead electric transmission line, wind-power, cell tower, oil or gas well drilling, sewer or water main, ski lift, or other linear utility project • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are part of a residential, commercial or institutional development • Sidewalks, bike paths, or walking paths, surfaced with an impervious cover, that are part of highway construction or reconstruction • Solar array field areas on slopes greater than 8% that cannot maintain sheet flow using management practices identified in the BB or the DM • Solar array field areas on slopes less than 8% that will alter the hydrology from pre- to post- development conditions • Solar array field areas with tables that are not elevated high enough to achieve final stabilization beneath the tables • Traditional impervious areas associated with solar development (e.g. roads, buildings, transformers) • Utility pads surfaced with impervious cover, including electric vehicle charging stations • All other construction activities that include the construction or reconstruction of impervious area or alter the hydrology from pre- to post-development conditions, and are not listed in Table 1 67 Appendix C APPENDIX C – Watersheds Requiring Enhanced Phosphorus Removal Watersheds where owners or operators of construction activities identified in Table 2 of Appendix B must prepare a SWPPP that includes SMPs designed in conformance with the Enhanced Phosphorus Removal Standards included in the DM technical standard. • Entire New York City Watershed located east of the Hudson River – Figure 1 • Onondaga Lake Watershed – Figure 2 • Greenwood Lake Watershed – Figure 3 • Oscawana Lake Watershed – Figure 4 • Kinderhook Lake Watershed – Figure 5 68 Appendix C Figure 1 - New York City Watershed East of the Hudson 69 Appendix C Figure 2 - Onondaga Lake Watershed 70 Appendix C Figure 3 - Greenwood Lake Watershed 71 Appendix C Figure 4 - Oscawana Lake Watershed 72 Appendix C Figure 5 - Kinderhook Lake Watershed 73 APPENDIX D – Impaired Waterbodies (by Construction Related Pollutants) List of waterbodies impaired by pollutants related to construction activity, including turbidity, silt/sediment, and nutrients (e.g. nitrogen, phosphorus). This list is a subset of “The Final New York State 2018 Section 303(d) List of Impaired Waters Requiring a TMDL” dated June 2020. County Waterbody Pollutant Albany Ann Lee (Shakers) Pond, Stump Pond (1201-0096) Phosphorus Albany Lawsons Lake (1301-0235) Phosphorus Allegany Amity Lake, Saunders Pond (0403-0054) Phosphorus Allegany Andover Pond (0403-0056) Phosphorus Bronx Reservoir No.1/Lake Isle (1702-0075) Phosphorus Bronx Van Cortlandt Lake (1702-0008) Phosphorus Broome Blueberry, Laurel Lakes (1404-0033) Phosphorus Broome Fly Pond, Deer Lake (1404-0038) Phosphorus Broome Minor Tribs to Lower Susquehanna (0603-0044) Phosphorus Broome Whitney Point Lake/Reservoir (0602-0004) Phosphorus Cattaraugus Allegheny River/Reservoir (0201-0023) Phosphorus Cattaraugus Beaver Lake/Alma Pond (0201-0073) Phosphorus Cattaraugus Case Lake (0201-0020) Phosphorus Cattaraugus Linlyco/Club Pond (0201-0035) Phosphorus Cayuga Duck Lake (0704-0025) Phosphorus Cayuga Owasco Inlet, Upper, and tribs (0706-0014) Nutrients Chautauqua Chadakoin River and tribs (0202-0018) Phosphorus Chautauqua Hulburt/Clymer Pond (0202-0079) Phosphorus Chautauqua Middle Cassadaga Lake (0202-0002) Phosphorus Clinton Great Chazy River, Lower, Main Stem (1002-0001) Silt/Sediment Columbia Robinson Pond (1308-0003) Phosphorus Cortland Dean Pond (0602-0077) Phosphorus Dutchess Fallkill Creek (1301-0087) Phosphorus Dutchess Hillside Lake (1304-0001) Phosphorus Dutchess Wappingers Lake (1305-0001) Phosphorus Dutchess Wappingers Lake (1305-0001) Silt/Sediment Erie Beeman Creek and tribs (0102-0030) Phosphorus Erie Delaware Park Pond (0101-0026) Phosphorus Erie Ellicott Creek, Lower, and tribs (0102-0018) Phosphorus Erie Ellicott Creek, Lower, and tribs (0102-0018) Silt/Sediment Erie Green Lake (0101-0038) Phosphorus Erie Little Sister Creek, Lower, and tribs (0104-0045) Phosphorus Erie Murder Creek, Lower, and tribs (0102-0031) Phosphorus Erie Rush Creek and tribs (0104-0018) Phosphorus Erie Scajaquada Creek, Lower, and tribs (0101-0023) Phosphorus Erie Scajaquada Creek, Middle, and tribs (0101-0033) Phosphorus Erie Scajaquada Creek, Upper, and tribs (0101-0034) Phosphorus Erie South Branch Smoke Cr, Lower, and tribs (0101-0036) Phosphorus Erie South Branch Smoke Cr, Lower, and tribs (0101-0036) Silt/Sediment Genesee Bigelow Creek and tribs (0402-0016) Phosphorus Genesee Black Creek, Middle, and minor tribs (0402 0028) Phosphorus Genesee Black Creek, Upper, and minor tribs (0402-0048) Phosphorus Genesee Bowen Brook and tribs (0102-0036) Phosphorus Genesee LeRoy Reservoir (0402-0003) Phosphorus Genesee Mill Pond (0402-0050) Phosphorus Genesee Oak Orchard Cr, Upper, and tribs (0301-0014) Phosphorus Genesee Oatka Creek, Middle, and minor tribs (0402-0031) Phosphorus Genessee Tonawanda Cr, Middle, Main Stem (0102-0002) Phosphorus Greene Schoharie Reservoir (1202-0012) Silt/Sediment Greene Sleepy Hollow Lake (1301-0059) Silt/Sediment Herkimer Steele Creek tribs (1201-0197) Phosphorus Herkimer Steele Creek tribs (1201-0197) Silt/Sediment Kings Hendrix Creek (1701-0006) 18 Nitrogen Kings Prospect Park Lake (1701-0196) Phosphorus Lewis Mill Creek/South Branch, and tribs (0801-0200) Nutrients Livingston Christie Creek and tribs (0402-0060) Phosphorus Livingston Conesus Lake (0402-0004) Phosphorus Livingston Mill Creek and minor tribs (0404-0011) Silt/Sediment Monroe Black Creek, Lower, and minor tribs (0402-0033) Phosphorus Monroe Buck Pond (0301-0017) Phosphorus Monroe Cranberry Pond (0301-0016) Phosphorus Monroe Durand, Eastman Lakes (0302-0037) Phosphorus Monroe Lake Ontario Shoreline, Western (0301-0069) 9 Phosphorus Monroe Long Pond (0301-0015) Phosphorus Monroe Mill Creek and tribs (0302-0025) Phosphorus 2 Monroe Mill Creek/Blue Pond Outlet and tribs (0402-0049) Phosphorus Monroe Minor Tribs to Irondequoit Bay (0302-0038) Phosphorus Monroe Rochester Embayment - East (0302-0002) [9] Phosphorus Monroe Rochester Embayment - West (0301-0068) 9 Phosphorus Monroe Shipbuilders Creek and tribs (0302-0026) Phosphorus 2 Monroe Thomas Creek/White Brook and tribs (0302-0023) Phosphorus 75 Nassau Bannister Creek/Bay (1701-0380) Nitrogen Nassau Beaver Lake (1702-0152) Phosphorus Nassau Browswere Bay (1701-0383) Nitrogen Nassau Camaans Pond (1701-0052) Phosphorus Nassau East Meadow Brook, Upper, and tribs (1701-0211) Silt/Sediment Nassau East Rockaway Channel (1701-0381) Nitrogen Nassau Glen Cove Creek, Lower, and tribs (1702-0146) Silt/Sediment Nassau Grant Park Pond (1701-0054) Phosphorus Nassau Hempstead Bay, Broad Channel (1701-0032) Nitrogen Nassau Hempstead Lake (1701-0015) Phosphorus Nassau Hewlett Bay (1701-0382) Nitrogen Nassau Hog Island Channel (1701-0220) Nitrogen Nassau Massapequa Creek, Upper, and tribs (1701-0174) Phosphorus Nassau Milburn/Parsonage Creeks, Upp, and tribs (1701- 0212) Phosphorus Nassau Reynolds Channel, East (1701-0215) [12] Nitrogen Nassau Reynolds Channel, West (1701-0216) 12 Nitrogen Nassau Tidal Tribs to Hempstead Bay (1701-0218) Nitrogen Nassau Tribs (fresh) to East Bay (1701-0204) Silt/Sediment Nassau Tribs (fresh) to East Bay (1701-0204) Phosphorus Nassau Tribs to Smith Pond/Halls Pond (1701-0221) Phosphorus Nassau Woodmere Channel (1701-0219) Nitrogen New York Harlem Meer (1702-0103) Phosphorus New York The Lake in Central Park (1702-0105) Phosphorus Niagara Bergholtz Creek and tribs (0101-0004) Phosphorus Niagara Hyde Park Lake (0101-0030) Phosphorus Niagara Lake Ontario Shoreline, Western (0301-0053) 9 Phosphorus Niagara Lake Ontario Shoreline, Western (0301-0072) 9 Phosphorus Oneida Ballou, Nail Creeks (1201-0203) Phosphorus Onondaga Ley Creek and tribs (0702-0001) 10 Nutrients (phosphorus) Onondaga Minor Tribs to Onondaga Lake (0702-0022) 10 Nutrients (phosphorus) Onondaga Minor Tribs to Onondaga Lake (0702-0022) 10 Nitrogen (NH3, NO2) Onondaga Onondaga Creek, Lower (0702-0023) 10 Nutrients (phosphorus) Onondaga Onondaga Creek, Lower, and tribs (0702-0023) Turbidity Onondaga Onondaga Creek, Middle, and tribs (0702-0004) Turbidity Onondaga Onondaga Creek, Upper, and tribs (0702-0024) Turbidity Ontario Great Brook and minor tribs (0704-0034) Phosphorus 2 Ontario Great Brook and minor tribs (0704-0034) Silt/Sediment 76 Ontario Hemlock Lake Outlet and minor tribs (0402-0013) Phosphorus Ontario Honeoye Lake (0402-0032) Phosphorus Orange Brown Pond Reservoir (1303-0013) Phosphorus Orange Lake Washington (1303-0012) Phosphorus Orange Minor Tribs to Middle Wallkill (1306-0061) Phosphorus Orange Monhagen Brook and tribs (1306-0074) Phosphorus Orange Orange Lake (1301-0008) [16] Phosphorus Orange Quaker Creek and tribs (1306-0025) Phosphorus Orange Wallkill River, Middle, Main Stem (1306-0038) Phosphorus Orange Wallkill River, Upper, and Minor tribs (1306-0017) Phosphorus Orleans Glenvwood Lake (0301-0041) Phosphorus Orleans Lake Ontario Shoreline, Western (0301-0070) 9 Phosphorus Orleans Lake Ontario Shoreline, Western (0301-0071) 9 Phosphorus Oswego Lake Neatahwanta (0701-0018) Nutrients (phosphorus) Oswego Pleasant Lake (0703-0047) Phosphorus Putnam Lost Lake, Putnam Lake (1302-0053) Phosphorus Putnam Minor Tribs to Croton Falls Reservoir (1302-0001) Phosphorus Queens Bergen Basin (1701-0009) 18 Nitrogen Queens Jamaica Bay, Eastern, and tribs, Queens (1701- 0005) 18 Nitrogen Queens Kissena Lake (1702-0258) Phosphorus Queens Meadow Lake (1702-0030) Phosphorus Queens Shellbank Basin (1701-0001) 18 Nitrogen Queens Willow Lake (1702-0031) Phosphorus Rensselaer Nassau Lake (1310-0001) Phosphorus Rensselaer Snyders Lake (1301-0043) Phosphorus Richmond Grassmere Lake/Bradys Pond (1701-0357) Phosphorus Rockland Congers Lake, Swartout Lake (1501-0019) Phosphorus Rockland Rockland Lake (1501-0021) Phosphorus Saratoga Ballston Lake (1101-0036) Phosphorus Saratoga Dwaas Kill and tribs (1101-0007) Phosphorus Saratoga Dwaas Kill and tribs (1101-0007) Silt/Sediment Saratoga Lake Lonely (1101-0034) Phosphorus Saratoga Round Lake (1101-0060) Phosphorus Saratoga Tribs to Lake Lonely (1101-0001) Phosphorus Schenectady Collins Lake (1201-0077) Phosphorus Schenectady Duane Lake (1311-0006) Phosphorus Schenectady Lake Mariaville Lake (1201-0113) Phosphorus Schuyler Cayuta Lake (0603-0005) Phosphorus 77 Seneca Reeder Creek and tribs (0705-0074) Phosphorus St.Lawrence Black Lake Outlet, Black Lake (0906-0001) Phosphorus St.Lawrence Fish Creek and minor tribs (0906-0026) Phosphorus Steuben Smith Pond (0502-0012) Phosphorus Suffolk Agawam Lake (1701-0117) Phosphorus Suffolk Big/Little Fresh Ponds (1701-0125) Phosphorus Suffolk Canaan Lake (1701-0018) Phosphorus Suffolk Canaan Lake (1701-0018) Silt/Sediment Suffolk Fresh Pond (1701-0241) Phosphorus Suffolk Great South Bay, East (1701-0039) Nitrogen Suffolk Great South Bay, Middle (1701-0040) Nitrogen Suffolk Great South Bay, West (1701-0173) Nitrogen Suffolk Lake Ronkonkoma (1701-0020) Phosphorus Suffolk Mattituck/Marratooka Pond (1701-0129) Phosphorus Suffolk Mill and Seven Ponds (1701-0113) Phosphorus Suffolk Millers Pond (1702-0013) Phosphorus Suffolk Moriches Bay, East (1701-0305) Nitrogen Suffolk Moriches Bay, West (1701-0038) Nitrogen Suffolk Quantuck Bay (1701-0042) Nitrogen Suffolk Shinnecock Bay and Inlet (1701-0033) Nitrogen Suffolk Tidal Tribs to West Moriches Bay (1701-0312) Nitrogen Sullivan Bodine, Mongomery Lakes (1401-0091) Phosphorus Sullivan Davies Lake (1402-0047) Phosphorus Sullivan Evens Lake (1402-0004) Phosphorus Sullivan Pleasure Lake (1402-0055) Phosphorus Sullivan Swan Lake (1401-0063) Phosphorus Tompkins Cayuga Lake, Southern End (0705-0040) Phosphorus Tompkins Cayuga Lake, Southern End (0705-0040) Silt/Sediment Ulster Ashokan Reservoir (1307-0004) Silt/Sediment Ulster Esopus Creek, Lower, Main Stem (1307-0010) [17] Turbidity Ulster Esopus Creek, Middle, Main Stem (1307-0003) 17 Turbidity Ulster Esopus Creek, Upper, and minor tribs (1307-0007)[3] Silt/Sediment Ulster Wallkill River, Lower, Main Stem (1306-0027) Phosphorus Warren Hague Brook and tribs (1006-0006) Silt/Sediment Warren Huddle/Finkle Brooks and tribs (1006-0003) Silt/Sediment Warren Indian Brook and tribs (1006-0002) Silt/Sediment Warren Lake George (1006-0016) and tribs Silt/Sediment Warren Tribs to Lake George, East Shore (1006-0020) Silt/Sediment Warren Tribs to Lake George, Lk.George Village (1006-0008) Silt/Sediment 78 Washington Wood Cr/Champlain Canal and tribs (1005-0036) Phosphorus Westchester Lake Katonah (1302-0136) Phosphorus Westchester Lake Lincolndale (1302-0089) Phosphorus Westchester Lake Meahagh (1301-0053) Phosphorus Westchester Lake Mohegan (1301-0149) Phosphorus Westchester Lake Shenorock (1302-0083) Phosphorus Westchester Mamaroneck River, Lower (1702-0071) Silt/Sediment Westchester Mamaroneck River, Upp, & minor tribs (1702-0123) Silt/Sediment Westchester Saw Mill River (1301-0007) Phosphorus Westchester Saw Mill River, Middle, and tribs (1301-0100) Phosphorus Westchester Sheldrake River (1702-0069) Phosphorus Westchester Sheldrake River (1702-0069) Silt/Sedimnt Westchester Silver Lake (1702-0040) Phosphorus Westchester Teatown Lake (1302-0150) Phosphorus Westchester Truesdale Lake (1302-0054) Phosphorus Westchester Wallace Pond (1301-0140) Phosphorus 79 APPENDIX E – List of NYSDEC Regional Offices Region COVERING THE FOLLOWING COUNTIES: DIVISION OF ENVIRONMENTAL PERMITS (DEP) PERMIT ADMINISTRATORS DIVISION OF WATER (DOW) WATER (SPDES) PROGRAM 1 NASSAU AND SUFFOLK 50 CIRCLE ROAD STONY BROOK, NY 11790 TEL. (631) 444-0365 50 CIRCLE ROAD STONY BROOK, NY 11790-3409 TEL. (631) 444-0405 2 BRONX, KINGS, NEW YORK, QUEENS AND RICHMOND 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4997 1 HUNTERS POINT PLAZA, 47-40 21ST ST. LONG ISLAND CITY, NY 11101-5407 TEL. (718) 482-4933 3 DUTCHESS, ORANGE, PUTNAM, ROCKLAND, SULLIVAN, ULSTER AND WESTCHESTER 21 SOUTH PUTT CORNERS ROAD NEW PALTZ, NY 12561-1696 TEL. (845) 256-3059 220 WHITE PLAINS ROAD, SUITE 110 TEL. (914) 428 - 2505 4 ALBANY, COLUMBIA, DELAWARE, GREENE, MONTGOMERY, OTSEGO, RENSSELAER, SCHENECTADY AND SCHOHARIE 1130 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2069 1130 NORTH WESTCOTT ROAD SCHENECTADY, NY 12306-2014 TEL. (518) 357-2045 5 CLINTON, ESSEX, FRANKLIN, FULTON, HAMILTON, SARATOGA, WARREN AND WASHINGTON 1115 STATE ROUTE 86, PO BOX 296 RAY BROOK, NY 12977-0296 TEL. (518) 897-1234 232 GOLF COURSE ROAD WARRENSBURG, NY 12885-1172 TEL. (518) 623-1200 6 HERKIMER, JEFFERSON, LEWIS, ONEIDA AND ST. LAWRENCE STATE OFFICE BUILDING 317 WASHINGTON STREET WATERTOWN, NY 13601-3787 TEL. (315) 785-2245 STATE OFFICE BUILDING 207 GENESEE STREET UTICA, NY 13501-2885 TEL. (315) 793-2554 7 BROOME, CAYUGA, CHENANGO, CORTLAND, MADISON, ONONDAGA, OSWEGO, TIOGA AND TOMPKINS 5786 WIDEWATERS PARKWAY SYRACUSE, NY 13214-1867 TEL. (315) 426-7438 5786 WIDEWATERS PARKWAY SYRACUSE, NY 13214-1867 TEL. (315) 426-7500 8 CHEMUNG, GENESEE, LIVINGSTON, MONROE, ONTARIO, ORLEANS, SCHUYLER, SENECA, STEUBEN, WAYNE AND YATES 6274 EAST AVON-LIMA ROADAVON, NY 14414-9519 TEL. (585) 226-2466 6274 EAST AVON-LIMA RD. AVON, NY 14414-9519 TEL. (585) 226-2466 9 ALLEGANY, CATTARAUGUS, CHAUTAUQUA, ERIE, NIAGARA AND WYOMING 700 DELAWARE AVENUE BUFFALO, NY 14209-2999 TEL. (716) 851-7165 700 DELAWARE AVENUE BUFFALO, NY 14209-2999 TEL. (716) 851-7070 80 APPENDIX F – SWPPP Preparer Certification Form The SWPPP Preparer Certification Form required by this permit begins on the following page. 81 SWPPP Preparer Certification Form 63'(6*HQHUDO3HUPLWIRU6WRUPZDWHU'LVFKDUJHVIURP &RQVWUXFWLRQ$FWLYLW\*3 &*3 ,QDFFRUGDQFHZLWK&*33DUW,'EWKHFRPSOHWHGIRUPPXVWEHDWWDFKHGWRWKHH12,DQG VXEPLWWHGWR1<6'(&electronically 3URMHFW6LWH Name H12,6XEPLVVLRQ,' Owner/Operator Name Certification Statement – SWPPP Preparer I hereby certify that the Stormwater Pollution Prevention Plan (SWPPP)has been prepared in accordance with the requirements of GP-0-25-001. I certify under penalty of law that the SWPPP and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. ,DPDZDUHWKDWWKHUHDUHVLJQLILFDQW SHQDOWLHVIRUVXEPLWWLQJIDOVHLQIRUPDWLRQLQFOXGLQJWKHSRVVLELOLW\RIILQHDQG LPSULVRQPHQWIRUNQRZLQJYLRODWLRQV SWPPP Preparer First Name MI SWPPP Preparer Last Name Signature Date Revised:January 2025 APPENDIX G – MS4 SWPPP Acceptance Form The MS4 SWPPP Acceptance Form required by this permit begins on the following page. 83 MS4 SWPPP Acceptance Form for construction activities seeking authorization under the 63'(6*HQHUDO3HUPLWIRU6WRUPZDWHU'LVFKDUJHVIURP &RQVWUXFWLRQ$FWLYLW\*3 &*3 (,QDFFRUGDQFHZLWK&*3 3DUW,'EWKHFRPSOHWHGIRUPPXVWEHDWWDFKHGWRWKHH12, DQGVXEPLWWHGWR1<6'(&electronically.) I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance Information 8. SWPPP Reviewed by: 9. Title/Position: 10. Date Final SWPPP Reviewed and Accepted: IV. Regulated MS4 Information 11. Name of MS4 2SHUDWRU: 12. MS4 SPDES Permit Identification Number: NYR20A 13.6WUHHW$GGUHVV 14.&LW\6WDWH=LS: 15.7HOHSKRQH1XPEHU: 3DJHRI MS4 SWPPP Acceptance Form continued V. Certification Statement - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative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dditional Information 3ULQWHGQDPHRIWKHSULQFLSDOH[HFXWLYHRIILFHURUUDQNLQJHOHFWHGRIILFLDOIRUWKH062SHUDWRURUWKHLU GXO\DXWKRUL]HGUHSUHVHQWDWLYHLQDFFRUGDQFHZLWK&*33DUW9,,- 1<6'(& 066:333 $FFHSWDQFH)RUP -DQXDU\2025) 3DJH RI APPENDIX H – NYCDEP SWPPP Acceptance/Approval Form The City of New York Department of Environmental Protection (NYCDEP) SWPPP Acceptance/Approval form required by this permit begins on the following page. 86 THE CITY OF NEW YORK DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Environmental Planning and Analysis 59-17 Junction Blvd., 9th Floor; Flushing, NY 11373 SWPPP Acceptance/Approval Application Number: I. Project Owner/Operator Information 1. Owner/Operator Name: 2. Contact Person: 3. Street Address: 4. City/State/Zip: II. Project Site Information 5. Project/Site Name: 6. Street Address: 7. City/State/Zip: III. Stormwater Pollution Prevention Plan (SWPPP) Review and Acceptance/Approval 8. SWPPP Reviewed by: 9. Title/Position: / Date Final SWPPP Reviewed and Accepted: Acceptance/Approval Expiration Date: IV. Regulated MS4 Information for projects that require coverage under the NY State Pollution Discharge Elimination System General Permit for Stormwater Discharges from Construction Activity 12. Name of MS4: CITY OF NEW YORK 13. MS4 SPDES Permit Identification Number: NY-0287890 14. Contact Person: 15. Street Address: 59-17 Junction Blvd. 9th Floor 16. City/State/Zip: Flushing, NY 11373 17. Telephone Number: Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from Construction Activity to: NYS Department of Environmental Conservation, Division of Water; 625 Broadway, 4th Floor; Albany, New York 12233-3505. Page 1 Of 2 THE CITY OF NEW YORK DEPARTMENT OF ENVIRONMENTAL PROTECTION Bureau of Environmental Planning and Analysis 59-17 Junction Blvd., 9th Floor; Flushing, NY 11373 V. Certification Statement - MS4 Official (principal executive officer or ranking elected official) or Duly Authorized Representative I hereby certify that the final Stormwater Pollution Prevention Plan (SWPPP) for the construction project identified in question 5 has been reviewed and meets the substantive requirements in the SPDES General Permit For Stormwater Discharges from Municipal Separate Storm Sewer Systems (MS4s). Note: The MS4, through the acceptance of the SWPPP, assumes no responsibility for the accuracy and adequacy of the design included in the SWPPP. In addition, review and acceptance of the SWPPP by the MS4 does not relieve the owner/operator or their SWPPP preparer of responsibility or liability for errors or omissions in the plan. Printed Name: Title/Position: Signature: Date: VI. Conditions of Acceptance/Approval and Additional Information Projects in the MS4 area must submit a copy of this SWPPP Acceptance with a Notice of Intent for coverage under the NY SPDES General Permit for Stormwater Discharges from Construction Activity to: NYS Department of Environmental Conservation, Division of Water; 625 Broadway, 4th Floor; Albany, New York 12233-3505. Page 2 Of 2 APPENDIX I – MS4 No Jurisdiction Form The MS4 No Jurisdiction Form required by this permit begins on the following page. 89 MS4 No Jurisdiction Form for Đonstruction Ăctivities seeking authorization under the SPDES General Permit for Stormwater Discharges from Construction Activity, GP-0-25-001 (CGP) (In accordance with CGP Part I.D.2.b., the completed form must be attached to the eNOI and submitted to NYSDEC ĞůĞĐƚƌŽŶŝĐĂůůLJ.) I. Project Owner/Operator Information a. Owner/Operator Name: b. Contact Person: c. Street Address: d. City/State/Zip: II. Project Site Information a. Project/Site Name: b. Street Address: c. City/State/Zip: d. eNOI Submission ID: III. Traditional Land Use Control MS4 Operator Information a. Name of MS4 Operator: b. MS4 SPDES Permit ID Number: NYR20A c. Street Address: d. City/State/Zip: e. Telephone Number: IV. Certification Statement In accordance with CGP Part I.D.2.b.ii.3., I hereby certify that the Traditional Land Use Control MS4 Operator identified in section III. of this form does not have review authority over the construction project identified in section II. of this form, which is owned/operated by the entity identified in section I. of this form. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. a. Printed name of the principal executive officer or ranking elected official for the MS4 Operator or their duly authorized representative in accordance with CGP Part VII.J.2.: b. Title/Position: c. Signature: d. Date: APPENDIX J – Owner/Operator Certification Form The Owner/Operator Certification Form required by this permit begins on the following page. 91 BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB 2ZQHU2SHUDWRU &HUWLILFDWLRQ)RUP 63'(6*HQHUDO3HUPLWIRU6WRUPZDWHU'LVFKDUJHVIURP &RQVWUXFWLRQ $FWLYLW\*3 &*3 ,QDFFRUGDQFHZLWK&*33DUW,'E RU3DUW,)DQGWKHFRPSOHWHGIRUPPXVWEHDWWDFKHGWRWKHH12,RUWKH 5HTXHVWWR&RQWLQXH&RYHUDJHDQGVXEPLWWHGWR1<6'(&electronically Project/Site Name: ________________________________________________________ eNOI Submission ,': _________________________________________________ eNOI Submitted by: Owner/Operator SWPPP Preparer Other Certification Statement - Owner/Operator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anuary 2025 Appendix J Historic Preservation/Endangered Species Documentation Regeneron Pharmaceuticals Esri Canada, Esri, HERE, Garmin, INCREMENT P, Intermap, USGS, METI/NASA, EPA, USDA June 9, 2025 0 0.15 0.30.07 mi 0 0.25 0.50.13 km 1:9,028 Author: LA Group Not a legal document Appendix K Deep Ripping and De-compaction (DEC, 2008) DE P A R T M E N T O F E N V I R O N M E N T A L C O N S E R V A T I O N N e w Y o r k S t a t e De e p - R i p p i n g a n d De c o m p a c t i o n Ne w Y o r k S t a t e De p a r t m e n t o f E n v i r o n m e n t a l C o n s e r v a t i o n Di v i s i o n o f W a t e r Ap r i l 2 0 0 8 Do c u m e n t P r e p a r e d b y : Jo h n E . L a c e y , La n d R e s o u r c e C o n s u l t a n t a n d E n v i r o n m e n t a l C o m p l i a n c e M o n i t o r (F o r m e r l y w i t h t h e D i v i s i o n o f A g r i c u l t u r a l P r o t e c t i o n a n d D e v e l o p m e n t S e r v i c e s , NY S D e p t . o f A g r i c u l t u r e & M a r k e t s ) 1 Al t e r n a t i v e ȱSt o r m w a t e r ȱMa n a g e m e n t ȱ De e p ȬRi p p i n g ȱan d ȱDe c o m p a c t i o n ȱ ȱȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ De s c r i p t i o n Th e t w o - p h a s e p r a c t i c e o f 1 ) “ D e e p R i p p i n g ; ” a n d 2 ) “ D e c o m p a c t i o n ” ( d e e p s u b s o i l i n g ) , o f t h e so i l m a t e r i a l a s a s t e p i n t h e c l e a n u p a n d r e s t o r a t i o n / l a n d s c a p i n g o f a c o n s t r u c t i o n s i t e , h e l p s mi t i g a t e t h e p h y s i c a l l y i n d u c e d i m p a c t s o f s o i l c o m p r e s s i o n ; i . e . : s o i l c o m p a c t i o n o r t h e su b s t a n t i a l i n c r e a s e i n t h e b u l k d e n s i t y o f t h e s o i l m a t e r i a l . De e p R i p p i n g a n d D e c o m p a c t i o n a r e k e y f a c t o r s w h i c h h e l p i n r e s t o r i n g s o i l p o r e s p a c e a n d pe r m e a b i l i t y f o r w a t e r i n f i l t r a t i o n . C o n v e r s e l y , t h e p h y s i c a l a c t i o n s o f c u t - a n d - f i l l w o r k , l a n d gr a d i n g , t h e o n g o i n g m o v e m e n t o f c o n s t r u c t i o n e q u i p m e n t a n d t h e t r a n s p o r t o f b u i l d i n g ma t e r i a l s t h r o u g h o u t a s i t e a l t e r t h e a r c h i t e c t u r e a n d s t r u c t u r e o f t h e s o i l , r e s u l t i n g i n : t h e m i x i n g of l a y e r s ( h o r i z o n s ) o f s o i l m a t e r i a l s , c o m p r e s s i o n o f t h o s e m a t e r i a l s a n d d i m i n i s h e d s o i l po r o s i t y w h i c h , i f l e f t u n c h e c k e d , s e v e r e l y i m p a i r s t h e s o i l ’ s w a t e r h o l d i n g c a p a c i t y a n d v e r t i c a l dr a i n a g e ( r a i n f a l l i n f i l t r a t i o n ) , f r o m t h e s u r f a c e d o w n w a r d . In a h u m i d c l i m a t e r e g i o n , c o m p a c t i o n d a m a g e o n a s i t e i s v i r t u a l l y g u a r a n t e e d o v e r t h e d u r a t i o n of a p r o j e c t . S o i l i n v e r y m o i s t t o w e t c o n d i t i o n w h e n c o m p a c t e d , w i l l h a v e s e v e r e l y r e d u c e d pe r m e a b i l i t y . F i g u r e 1 d i s p l a y s t h e e a r l y s t a g e o f t h e d e e p - r i p p i n g p h a s e ( N o t e t h a t a l l t o p s o i l wa s s t r i p p e d p r i o r t o c o n s t r u c t i o n a c c e s s , a n d i t r e m a i n s s t o c k p i l e d u n t i l t h e n e x t p h a s e – de c o m p a c t i o n – i s c o m p l e t e ) . A h e a v y - d u t y t r a c t o r i s p u l l i n g a t h r e e - s h a n k r i p p e r o n t h e f i r s t o f se v e r a l s e r i e s o f i n c r e m e n t a l l y d e e p e n i n g p a s s e s t h r o u g h t h e c o n s t r u c t i o n a c c e s s c o r r i d o r ' s de n s e l y c o m p r e s s e d s u b s o i l m a t e r i a l . F i g u r e 2 i l l u s t r a t e s t h e a p p r o x i m a t e v o l u m e t r i c co m p o s i t i o n o f a l o a m s u r f a c e s o i l w h e n c o n d i t i o n s a r e g o o d f o r p l a n t g r o w t h , w i t h a d e q u a t e na t u r a l p o r e s p a c e f o r f l u c t u a t i n g m o i s t u r e c o n d i t i o n s . ȱ Fi g . 1 . A t y p i c a l d e e p r i p p i n g ph a s e o f t h i s pr a c t i c e , d u r i n g t h e f i r s t i n a s e r i e s o f pr o g r e s s i v e l y d e e p e r “ r i p s ” t h r o u g h s e v e r e l y co m p r e s s e d s u b s o i l . Fi g . 2 . A b o u t 5 0 % o f t h e v o l u m e o f u n d i s t u r b e d lo a m s u r f a c e s o i l i s p o r e s p a c e , w h e n s o i l i s i n go o d c o n d i t i o n f o r p l a n t g r o w t h . B r a d y , 2 0 0 2 . 2 Re c o m m e n d e d A p p l i c a t i o n o f P r a c t i c e Th e ȱob j e c t i v e o f D e e p R i p p i n g a n d De c o m p a c t i o n i s t o e f f e c t i v e l y f r a c t u r e (v e r t i c a l l y a n d l a t e r a l l l y ) t h r o u g h t h e t h i c k n e s s of t h e p h y s i c a l l y c o m p r e s s e d s u b s o i l m a t e r i a l (s e e F i g u r e 3 ) , r e s t o r i n g s o i l p o r o s i t y a n d pe r m e a b i l i t y a n d a i d i n g i n f i l t r a t i o n t o h e l p re d u c e r u n o f f . T o g e t h e r w i t h t o p s o i l s t r i p p i n g , th e “ t w o - p h a s e ” p r a c t i c e o f D e e p R i p p i n g a n d De c o m p a c t i o n f i r s t b e c a m e e s t a b l i s h e d a s a “ b e s t ma n a g e m e n t p r a c t i c e ” t h r o u g h o n g o i n g s u c c e s s on c o m m e r c i a l f a r m l a n d s a f f e c t e d b y h e a v y ut i l i t y c o n s t r u c t i o n r i g h t - o f - w a y p r o j e c t s (t r a n s m i s s i o n p i p e l i n e s a n d l a r g e p o w e r l i n e s ) . So i l p e r m e a b i l i t y , s o i l d r a i n a g e a n d c r o p l a n d pr o d u c t i v i t y w e r e r e s t o r e d . F o r b r o a d e r co n s t r u c t i o n a p p l i c a t i o n , t h e t w o - p h a s e p r a c t i c e o f D e e p R i p p i n g a n d D e c o m p a c t i o n i s b e s t ad a p t e d t o a r e a s i m p a c t e d w i t h s i g n i f i c a n t s o i l c o m p a c t i o n , o n c o n t i g u o u s o p e n p o r t i o n s o f l a r g e co n s t r u c t i o n s i t e s a n d i n s i d e l o n g , o p e n c o n s t r u c t i o n c o r r i d o r s u s e d a s t e m p o r a r y a c c e s s o v e r t h e du r a t i o n o f c o n s t r u c t i o n . E a c h m i t i g a t i o n a r e a s h o u l d h a v e m i n i m a l a b o v e - a n d - b e l o w - g r o u n d ob s t r u c t i o n s f o r t h e e a s y a v o i d a n c e a n d m a n e u v e r i n g o f a l a r g e t r a c t o r a n d r i p p i n g / d e c o m p a c t i n g im p l e m e n t s . C o n v e r s e l y , t h e c o m p l e t e t w o - p h a s e p r a c t i c e i s n o t r e c o m m e n d e d i n c o n g e s t e d o r ob s t r u c t e d a r e a s d u e t o t h e l i m i t a t i o n s o n t r a c t o r a n d i m p l e m e n t m o v e m e n t . Be n e f i t s Ag g r e s s i v e “ d e e p r i p p i n g ” t h r o u g h t h e c o m p r e s s e d t h i c k n e s s o f e x p o s e d s u b s o i l b e f o r e t h e re p l a c e m e n t / r e s p r e a d i n g o f t h e t o p s o i l l a y e r , f o l l o w e d b y “ d e c o m p a c t i o n , ” i . e . : “ s u b - s o i l i n g , ” th r o u g h t h e r e s t o r e d t o p s o i l l a y e r d o w n i n t o t h e s u b s o i l , o f f e r s t h e f o l l o w i n g b e n e f i t s : x In c r e a s e s t h e p r o j e c t ( l a r g e r s i z e ) a r e a ’ s d i r e c t s u r f a c e i n f i l t r a t i o n o f r a i n f a l l b y pr o v i d i n g t h e o p e n s i t e ’ s m i t i g a t e d s o i l c o n d i t i o n a n d l o w e r s t h e d e m a n d o n co n c e n t r a t e d r u n o f f c o n t r o l s t r u c t u r e s x En h a n c e s d i r e c t g r o u n d w a t e r r e c h a r g e t h r o u g h g r e a t e r d i s p e r s i o n a c r o s s a n d t h r o u g h a br o a d e r s u r f a c e t h a n a f f o r d e d b y s o m e r u n o f f - c o n t r o l s t r u c t u r a l m e a s u r e s x De c r e a s e s r u n o f f v o l u m e g e n e r a t e d a n d p r o v i d e s h y d r o l o g i c s o u r c e c o n t r o l x Ma y b e p l a n n e d f o r a p p l i c a t i o n i n f e a s i b l e o p e n l o c a t i o n s e i t h e r a l o n e o r i n Fi g . 3 . C o n s t r u c t i o n s i t e w i t h s i g n i f i c a n t co m p a c t i o n o f t h e d e e p b a s a l t i l l s u b s o i l ex t e n d s 2 4 i n c h e s b e l o w t h i s e x p o s e d c u t - an d - f i l l w o r k s u r f a c e . 3 co n j u n c t i o n w i t h p l a n s f o r s t r u c t u r a l p r a c t i c e s ( e . g . , s u b s u r f a c e d r a i n l i n e o r in f i l t r a t i o n b a s i n ) s e r v i n g t h e s a m e o r c o n t i g u o u s a r e a s x Pr o m o t e s s u c c e s s f u l l o n g - t e r m r e v e g e t a t i o n b y r e s t o r i n g s o i l p e r m e a b i l i t y , d r a i n a g e a n d wa t e r h o l d i n g c a p a c i t y f o r h e a l t h y ( r a t h e r t h a n r e s t r i c t e d ) r o o t - s y s t e m d e v e l o p m e n t o f tr e e s , s h r u b s a n d d e e p r o o t e d g r o u n d c o v e r , m i n i m i z i n g p l a n t d r o w n i n g d u r i n g w e t pe r i o d s a n d b u r n o u t d u r i n g d r y p e r i o d s . Fe a s i b i l i t y / L i m i t a t i o n s Th e e f f e c t i v e n e s s o f D e e p R i p p i n g a n d D e c o m p a c t i o n i s g o v e r n e d m o s t l y b y s i t e f a c t o r s s u c h a s : th e o r i g i n a l ( u n d i s t u r b e d ) s o i l ’ s h y d r o l o g i c c h a r a c t e r i s t i c s ; t h e g e n e r a l s l o p e ; l o c a l w e a t h e r / t i m i n g (s o i l m o i s t u r e ) f o r i m p l e m e n t a t i o n ; t h e s p a c e - r e l a t e d f r e e d o m o f e q u i p m e n t / i m p l e m e n t ma n e u v e r a b i l i t y ( n o t e d a b o v e i n Re c o m m e n d e d A p p l i c a t i o n o f P r a c t i c e ), a n d b y t h e p r o p e r se l e c t i o n a n d o p e r a t i o n o f t r a c t o r a n d i m p l e m e n t s ( e x p l a i n e d b e l o w i n De s i g n G u i d a n c e ). T h e mo r e n o t a b l e s i t e - r e l a t e d f a c t o r s i n c l u d e : So i l In t h e u n d i s t u r b e d c o n d i t i o n , e a c h i d e n t i f i e d s o i l t y p e c o m p r i s i n g a s i t e i s g r o u p e d i n t o o n e o f fo u r c a t e g o r i e s o f s o i l h y d r o l o g y , H y d r o l o g i c S o i l G r o u p A , B , C o r D , d e t e r m i n e d p r i m a r i l y b y a ra n g e o f c h a r a c t e r i s t i c s i n c l u d i n g s o i l t e x t u r e , d r a i n a g e c a p a b i l i t y w h e n t h o r o u g h l y w e t , a n d d e p t h to w a t e r t a b l e . T h e n a t u r a l r a t e s o f i n f i l t r a t i o n a n d t r a n s m i s s i o n o f s o i l - w a t e r t h r o u g h t h e un d i s t u r b e d s o i l l a y e r s f o r G r o u p A i s “ h i g h ” w i t h a l o w r u n o f f p o t e n t i a l w h i l e s o i l s i n G r o u p B ar e m o d e r a t e i n i n f i l t r a t i o n a n d t h e t r a n s m i s s i o n o f s o i l - w a t e r w i t h a m o d e r a t e r u n o f f p o t e n t i a l , de p e n d i n g s o m e w h a t o n s l o p e . S o i l s i n G r o u p C h a v e s l o w r a t e s o f i n f i l t r a t i o n a n d t r a n s m i s s i o n of s o i l - w a t e r a n d a m o d e r a t e l y h i g h r u n o f f p o t e n t i a l i n f l u e n c e d b y s o i l t e x t u r e a n d s l o p e ; w h i l e so i l s i n G r o u p D h a v e e x c e p t i o n a l l y s l o w ra t e s o f i n f i l t r a t i o n a n d t r a n s m i s s i o n o f s o i l - wa t e r , a n d h i g h r u n o f f p o t e n t i a l . In F i g u r e 4 , t h e p r o f i l e d i s p l a y s t h e un d i s t u r b e d h o r i z o n s o f a s o i l i n H y d r o l o g i c So i l G r o u p C a n d t h e n a t u r a l l y s l o w r a t e o f in f i l t r a t i o n t h r o u g h t h e s u b s o i l . T h e s l o w r a t e of i n f i l t r a t i o n b e g i n s i m m e d i a t e l y b e l o w t h e to p s o i l h o r i z o n ( 3 0 c m ) , d u e t o t h e l i m i t e d am o u n t o f m a c r o p o r e s , e . g . : n a t u r a l s u b s o i l fr a c t u r e s , w o r m h o l e s a n d r o o t c h a n n e l s . In f i l t r a t i o n a f t e r t h e c o n s t r u c t i o n - i n d u c e d mi x i n g a n d c o m p r e s s i o n o f s u c h s u b s o i l ma t e r i a l i s v i r t u a l l y a b s e n t ; b u t c a n b e re s t o r e d b a c k t o t h i s n a t u r a l l e v e l w i t h t h e tw o - p h a s e p r a c t i c e o f d e e p r i p p i n g a n d de c o m p a c t i o n , f o l l o w e d b y t h e p e r m a n e n t es t a b l i s h m e n t o f a n a p p r o p r i a t e , d e e p t a p r o o t Fi g . 4 . P r o f i l e ( i n c e n t i m e t e r s ) d i s p l a y i n g t h e in f i l t r a t i o n t e s t r e s u l t o f t h e n a t u r a l u n d i s t u r b e d ho r i z o n s o f a s o i l i n H y d r o l o g i c S o i l G r o u p C . 4 la w n / g r o u n d c o v e r t o h e l p m a i n t a i n t h e r e s t o r e d s u b s o i l s t r u c t u r e . I n f i l t r a t i o n a f t e r c o n s t r u c t i o n - in d u c e d m i x i n g a n d c o m p r e s s i o n o f s u c h s u b s o i l m a t e r i a l c a n b e n o t a b l y r e h a b i l i t a t e d w i t h t h e De e p R i p p i n g a n d D e c o m p a c t i o n p r a c t i c e , w h i c h p r e p a r e s t h e s i t e f o r t h e a p p r o p r i a t e l o n g - t e r m la w n / g r o u n d c o v e r m i x i n c l u d i n g d e e p t a p r o o t p l a n t s s u c h a s c l o v e r , f e s c u e o r t r e f o i l , e t c . n e e d e d fo r a l l r e h a b i l i t a t e d s o i l s . Ge n e r a l l y , s o i l s i n H y d r o l o g i c S o i l G r o u p s A a n d B , w h i c h r e s p e c t i v e l y m a y i n c l u d e d e e p , w e l l - dr a i n e d , s a n d y - g r a v e l l y m a t e r i a l s o r d e e p , m o d e r a t e l y w e l l - d r a i n e d b a s a l t i l l m a t e r i a l s , a r e a m o n g th e e a s i e r o n e s t o r e s t o r e p e r m e a b i l i t y a n d i n f i l t r a t i o n , b y d e e p r i p p i n g a n d d e c o m p a c t i o n . A m o n g th e m a n y d i f f e r e n t s o i l s i n H y d r o l o g i c S o i l G r o u p C a r e t h o s e u n i q u e g l a c i a l t i l l s h a v i n g a n a t u r a l fr a g i p a n z o n e , b e g i n n i n g a b o u t 1 2 t o 1 8 i n c h e s ( 3 0 – 4 5 c m ) , b e l o w s u r f a c e . A l t h o u g h s o i l s i n Hy d r o l o g i c S o i l G r o u p C d o r e q u i r e a s o m e w h a t m o r e c a r e f u l l y a p p l i e d l e v e l o f t h e D e e p R i p p i n g an d D e c o m p a c t i o n p r a c t i c e , i t c a n g r e a t l y b e n e f i t s u c h a f f e c t e d a r e a s b y r e d u c i n g t h e r u n o f f a n d fo s t e r i n g i n f i l t r a t i o n t o a l e v e l e q u a l t o t h a t o f p r e - d i s t u r b a n c e . So i l s i n H y d r o l o g i c S o i l G r o u p D t y p i c a l l y h a v e a p e r m a n e n t h i g h w a t e r t a b l e c l o s e t o t h e s u r f a c e , in f l u e n c e d b y a c l a y o r o t h e r h i g h l y i m p e r v i o u s l a y e r o f m a t e r i a l . I n m a n y l o c a t i o n s w i t h c l a y su b s o i l m a t e r i a l , t h e b u l k d e n s i t y i s s o n a t u r a l l y h i g h t h a t h e a v y t r a f f i c k i n g h a s l i t t l e o r n o a d d e d im p a c t o n i n f i l t r a t i o n ; a n d s t r u c t u r a l r u n o f f c o n t r o l p r a c t i c e s r a t h e r t h a n D e e p R i p p i n g a n d De c o m p a c t i o n s h o u l d b e c o n s i d e r e d . Th e i n f o r m a t i o n a b o u t H y d r o l o g i c S o i l G r o u p s i s m e r e l y a g e n e r a l g u i d e l i n e . S i t e - s p e c i f i c d a t a su c h a s l i m i t e d d e p t h s o f c u t - a n d - f i l l g r a d i n g w i t h m i n i m a l r e m o v a l o r t r a n s l o c a t i o n o f t h e i n h e r e n t su b s o i l m a t e r i a l s ( a s a n a l y z e d i n t h e c o u n t y s o i l s u r v e y ) o r , c o n v e r s e l y , t h e e x c a v a t i o n a n d tr a n s l o c a t i o n o f d e e p e r , u n c o n s o l i d a t e d s u b s t r a t u m o r c o n s o l i d a t e d b e d r o c k m a t e r i a l s ( u n l i k e t h e an a l y z e d s u b s o i l h o r i z o n s ’ m a t e r i a l s r e f e r r e d t o i n t h e c o u n t y s o i l s u r v e y ) s h o u l d a l w a y s b e t a k e n in t o a c c o u n t . Si t e s m a d e u p w i t h s i g n i f i c a n t q u a n t i t i e s o f l a r g e r o c k s , o r h a v i n g a v e r y s h a l l o w d e p t h t o b e d r o c k , ar e n o t c o n d u c i v e t o d e e p r i p p i n g a n d d e c o m p a t i o n ( s u b s o i l i n g ) ; a n d o t h e r m e a s u r e s m a y b e m o r e pr a c t i c a l . Sl o p e Th e t w o - p h a s e a p p l i c a t i o n o f 1 ) d e e p r i p p i n g a n d 2 ) d e c o m p a c t i o n ( d e e p s u b s o i l i n g ) , i s m o s t pr a c t i c a l o n f l a t , g e n t l e a n d m o d e r a t e s l o p e s . I n s o m e s i t u a t i o n s , s u c h a s b u t n o t l i m i t e d t o te m p o r a r y c o n s t r u c t i o n a c c e s s c o r r i d o r s , i n c l u s i o n a r e a s t h a t a r e m o d e r a t e l y s t e e p a l o n g a p r o j e c t ’ s ot h e r w i s e g e n t l e o r m o d e r a t e s l o p e m a y a l s o b e d e e p r i p p e d a n d d e c o m p a c t e d . F o r l i m i t e d in s t a n c e s o f m o d e r a t e s t e e p n e s s o n o t h e r p r o j e c t s , h o w e v e r , t h e p o s t - c o n s t r u c t i o n l a n d u s e a n d t h e re l a t i v e a l i g n m e n t o f t h e p o t e n t i a l r i p p i n g a n d d e c o m p a c t i o n w o r k i n r e l a t i o n t o t h e l a y o f t h e sl o p e s h o u l d b e r e v i e w e d f o r s a f e t y a n d p r a c t i ca l i t y . I n b r o a d c o n s t r u c t i o n a r e a s p r e d o m i n a t e d b y mo d e r a t e l y s t e e p o r s t e e p s l o p e s , t h e p r a c t i c e i s g e n e r a l l y n o t u s e d . Lo c a l W e a t h e r / T i m i n g / S o i l M o i s t u r e Ef f e c t i v e f r a c t u r i n g o f c o m p r e s s e d s u b s o i l m a t e r i a l f r o m t h e e x p o s e d w o r k s u r f a c e , l a t e r a l l y a n d ve r t i c a l l y d o w n t h r o u g h t h e a f f e c t e d z o n e i s a c h i e v e d o n l y w h e n t h e s o i l m a t e r i a l i s m o d e r a t e l y dr y t o m o d e r a t e l y m o i s t . N e i t h e r o n e o f t h e t w o - p h a s e s , d e e p r i p p i n g n o r d e c o m p a c t i o n ( d e e p 5 Fi g . 5 . A u g e r e d f r o m a d e p t h o f 1 9 i n c h e s be l o w t h e s u r f a c e o f t h e r e p l a c e d t o p s o i l , th i s s u b s o i l s a m p l e w a s h a n d r o l l e d t o a 1/ 8 - i n c h d i a m e t e r . T h e t e s t s h o w s t h e s o i l a t th i s s i t e s t r e t c h e s o u t t o o f a r w i t h o u t cr u m b l i n g ; i t i n d i c a t e s t h e m a t e r i a l i s i n a pl a s t i c s t a t e o f c o n s i s t e n c e , t o o w e t f o r f i n a l de c o m pac t i o n (de e p s u b s o i l i n g) a t t h i s t i m e . su b s o i l i n g ) , c a n b e e f f e c t i v e l y c o n d u c t e d w h e n t h e s o i l m a t e r i a l ( s u b s o i l o r r e p l a c e d t o p s o i l ) i s i n ei t h e r a “ p l a s t i c ” o r “ l i q u i d ” s t a t e o f s o i l c o n s i s t e n c y . P u l l i n g t h e r e s p e c t i v e i m p l e m e n t s l e g s th r o u g h t h e s o i l w h e n i t i s o v e r l y m o i s t o n l y r e s u l t s i n t h e “ s l i c i n g a n d s m e a r i n g ” o f t h e m a t e r i a l o r ad d e d “ s q u e e z i n g a n d c o m p r e s s i o n ” i n s t e a d o f t h e n e c e s s a r y f r a c t u r i n g . A m p l e d r y i n g t i m e i s ne e d e d f o r a “ r i p p a b l e ” s o i l c o n d i t i o n n o t m e r e l y i n t h e m a t e r i a l c l o s e t o t h e s u r f a c e , b u t th r o u g h o u t t h e m a t e r i a l l o c a t e d d o w n t o t h e b o t t o m o f t h e p h y s i c a l l y c o m p r e s s e d z o n e o f t h e su b s o i l . Th e “ p o o r m a n ’ s A t t e r b e r g f i e l d t e s t ” f o r s o i l pl a s t i c i t y i s a s i m p l e “ h a n d - r o l l ” m e t h o d u s e d fo r q u i c k , o n - s i t e d e t e r m i n a t i o n o f w h e t h e r o r no t t h e m o i s t u r e l e v e l o f t h e a f f e c t e d s o i l ma t e r i a l i s l o w e n o u g h f o r : e f f e c t i v e d e e p ri p p i n g o f s u b s o i l ; r e s p r e a d i n g o f t o p s o i l i n a fr i a b l e s t a t e ; a n d f i na l d e c o m p a c t i o n ( d e e p su b s o i l i n g ) . U s i n g a s a m p l e o f s o i l m a t e r i a l ob t a i n e d f r o m t h e p l a n n e d b o t t o m d e p t h o f ri p p i n g , e . g . : 2 0 - 2 4 i n c h e s b e l o w e x p o s e d su b s o i l s u r f a c e , t h e s a m p l e i s h a n d r o l l e d be t w e e n t h e p a l m s d o w n t o a 1 / 8 - i n c h d i a m e t e r th r e a d . ( U s e t h e s a m e t e s t f o r s t o r e d t o p s o i l ma t e r i a l b e f o r e r e s p r e a d i n g o n t h e s i t e . ) I f t h e re s p e c t i v e s o i l s a m p l e c r u m b l e s a p a r t i n se g m e n t s n o g r e a t e r t h a n 3 / 8 o f a n i n c h l o n g , b y th e t i m e i t i s r o l l e d d o w n t o 1 / 8 i n c h d i a m e t e r , i t is l o w e n o u g h i n m o i s t u r e f o r d e e p r i p p i n g ( o r to p s o i l r e p l a c e m e n t ) , a n d d e c o m p a c t i o n . Co n v e r s e l y , a s s h o w n i n F i g u r e 5 , i f t h e r o l l e d sa m p l e s t r e t c h e s o u t i n i n c r e m e n t s g r e a t e r t h a n 3/ 8 o f a n i n c h l o n g b e f o r e c r u m b l i n g , i t i s i n a “ p l a s t i c ” s t a t e o f s o i l c o n s i s t e n c y a n d i s t o o w e t f o r su b s o i l r i p p i n g ( a s w e l l a s t o p s o i l r e p l a c e m e n t ) a n d f i n a l d e c o m p a c t i o n . De s i g n G u i d a n c e Be y o n d t h e a b o v e - n o t e d s i t e f a c t o r s , a v i t a l r e q u i r e m e n t f o r t h e e f f e c t i v e D e e p R i p p i n g a n d De c o m p a c t i o n ( d e e p s u b s o i l i n g ) , i s i m p l e m e n t i n g t h e p r a c t i c e i n i t s d i s t i n c t , t w o - p h a s e p r o c e s s : 1) D e e p r i p t h e a f f e c t e d t h i c k n e s s o f e x p o s e d s u b s o i l m a t e r i a l ( s e e F i g u r e 1 0 a n d 1 1 ) , a g g r e s s i v e l y fr a c t u r i n g i t b e f o r e t h e p r o t e c t e d t o p s o i l i s r e a p p l i e d o n t h e s i t e ( s e e F i g u r e 1 2 ) ; a n d 2) D e c o m p a c t ( d e e p s u b s o i l ) , s i m u l t a n e o u s l y t h r o u g h t h e r e s t o r e d t o p s o i l l a y e r a n d t h e u p p e r h a l f of t h e a f f e c t e d s u b s o i l ( F i g u r e 1 3 ) . T h e s e c o n d p h a s e , “ d e c o m p a c t i o n , ” m i t i g a t e s t h e p a r t i a l re c o m p a c t i o n w h i c h o c c u r s d u r i n g t h e h e a v y p r o c e s s o f t o p s o i l s p r e a d i n g / g r a d i n g . P r i o r t o d e e p ri p p i n g a n d d e c o m p a c t i n g t h e s i t e , a l l c o n s t r u c t i o n a c t i v i t y , i n c l u d i n g c o n s t r u c t i o n e q u i p m e n t a n d ma t e r i a l s t o r a g e , s i t e c l e a n u p a n d t r a f f i c k i n g ( F i g u r e 1 4 ) , s h o u l d b e f i n i s h e d ; a n d t h e s i t e c l o s e d o f f to f u r t h e r d i s t u r b a n c e . L i k e w i s e , o n c e t h e p r a c t i c e i s u n d e r w a y a n d t h e a r e a ’ s s o i l p e r m e a b i l i t y a n d 6 Fi g . 6 . A l i g h t d u t y c h i s e l i m p l e m e n t , n o t ad e q u a t e f o r e i t h e r t h e d e e p r i p p i n g o r de c o m p a c t i o n ( d e e p s u b s o i l i n g ) p h a s e . ra i n f a l l i n f i l t r a t i o n a r e b e i n g r e s t o r e d , a p o l i c y l i m i t i ng a l l f u r t h e r t r a f f i c t o p e r m a n e n t t r a v e l l a n e s is m a i n t a i n e d . Th e o t h e r c r i t i c a l e l e m e n t s , o u t l i n e d b e l o w , a r e : u s i n g t h e p r o p e r i m p l e m e n t s ( d e e p , h e a v y - d u t y ri p p e r s a n d s u b s o i l e r s ) , a n d a m p l e p u l l i n g - p o w e r e q u i p m e n t ( t r a c t o r s ) ; a n d c o n d u c t i n g t h e p r a c t i c e at t h e a p p r o p r i a t e s p e e d , d e p t h a n d p a t t e r n ( s ) o f m o v e m e n t . No t e t h a t a n a p p r o p r i a t e p l a n f o r t h e s e p a r a t e p r a c t i c e o f e s t a b l i s h i n g a h e a l t h y p e r e n n i a l g r o u n d co v e r , w i t h d e e p r o o t i n g t o h e l p m a i n t a i n t h e r e s t o r e d s o i l s t r u c t u r e , s h o u l d b e d e v e l o p e d i n ad v a n c e . T h i s m a y r e q u i r e t h e a s s i s t a n c e o f a n a g r o n o m i s t o r l a n d s c a p e h o r t i c u l t u r i s t . Im p l e m e n t s Av o i d t h e u s e o f a l l u n d e r s i z e i m p l e m e n t s . T h e s m a l l - t o - m e d i u m , l i g h t - d u t y t o o l w i l l , a t b e s t , o n l y “s c a r i f y ” t h e u p p e r m o s t s u r f a c e p o r t i o n o f t h e m a s s o f c o m p a c t e d s u b s o i l m a t e r i a l . T h e t e r m “c h i s e l p l o w ” i s c o m m o n l y b u t i n c o r r e c t l y a p p l i e d t o a b r o a d r a n g e o f i m p l e m e n t s . W h i l e a f e w ma y b e a d a p t e d f o r t h e m o d e r a t e s u b s o i l i n g o f n o n - i m p a c t e d s o i l s , t h e m a j o r i t y a r e l e s s d u r a b l e an d u s e d f o r o n l y l i g h t e r l a n d - f i t t i n g ( s e e F i g u r e 6 ) . Us e a “ h e a v y d u t y ” a g r i c u l t u r a l - g r a d e , d e e p r i p p e r ( s e e F i g u r e s 7 , 9 , 1 0 a n d 1 1 ) f o r t h e f i r s t p h a s e : th e l a t e r a l a n d v e r t i c a l f r a c t u r i n g o f t h e m a s s o f e x p o s e d a n d c o m p r e s s e d s u b s o i l , d o w n a n d th r o u g h , t o t h e b o t t o m o f i m p a c t , p r i o r t o t h e r e p l a c e m e n t o f t h e t o p s o i l l a y e r . ( A n y o v e r s i z e r o c k s wh i c h a r e u p l i f t e d t o t h e s u b s o i l s u r f a c e d u r i n g t h e d e e p r i p p i n g p h a s e a r e p i c k e d a n d r e m o v e d . ) Li k e t h e h e a v y - d u t y c l a s s o f i m p l e m e n t f o r t h e f i r s t p h a s e , t h e d e c o m p a c t i o n ( d e e p s u b s o i l i n g ) o f Ph a s e 2 i s c o n d u c t e d w i t h t h e h e a v y - d u t y v e r s i o n o f t h e d e e p s u b s o i l e r . M o r e p r e f e r a b l e i s t h e an g l e d - l e g v a r i e t y o f d e e p s u b s o i l e r ( s h o w n i n F i g u r e s 8 a n d 1 3 ) . I t m i n i m i z e s t h e i n v e r s i o n o f t h e su b s o i l a n d t o p s o i l l a y e r s w h i l e l a t e r a l l y a n d v e r t i c a l l y f r a c t u r i n g t h e u p p e r h a l f o f t h e p r e v i o u s l y ri p p e d s u b s o i l l a y e r a n d a l l o f t h e t o p s o i l l a y e r b y d e l i v e r i n g a m o m e n t a r y , w a v e - l i k e “ l i f t i n g a n d sh a t t e r i n g ” a c t i o n u p t h r o u g h t h e s o i l l a y e r s a s i t i s p u l l e d . Fi g . 7 . O n e o f s e v e r a l v a r i a t i o n s o f a n ag r i c u l t u r a l r i p p e r . T h i s u n i t h a s l o n g , r u g g e d sh a n k s m o u n t e d o n a s t e e l V - f r a m e f o r d e e p , agg re s s i v e f r a c t u r i n g t h r o u gh P h a s e 1 . 7 Fi g . 8 . A d e e p , a n g l e d - l e g s u b s o i l e r , i d e a l f o r Ph a s e 2 d e c o m p a c t i o n o f a f t e r t h e t o p s o i l l a y e r is g r a d e d o n t o p o f t h e r i p p e d s u b s o i l . Pu l l i n g - P o w e r o f E q u i p m e n t Us e t h e f o l l o w i n g r u l e o f t h u m b f o r t r a c t o r h o r s e p o w e r ( h p ) w h e n e v e r d e e p r i p p i n g a n d de c o m p a c t i n g a s i g n i f i c a n t l y i m p a c t e d s i t e : F o r b o t h t y p e s o f i m p l e m e n t , h a v e a t l e a s t 4 0 h p o f tr a c t o r p u l l a v a i l a b l e f o r e a c h m o u n t e d s h a n k / l e g . Us i n g t h e e x a m p l e s o f a 3 - s h a n k a n d a 5 - s h a n k i m p l e m e n t , t h e r e s p e c t i v e t r a c t o r s s h o u l d h a v e 1 2 0 an d 2 0 0 h p a v a i l a b l e f o r f r a c t u r i n g d o w n t o t h e f i n a l d e p t h o f 2 0 - t o - 2 4 i n c h e s p e r p h a s e . F i n a l de p t h f o r t h e d e e p r i p p i n g i n P h a s e 1 i s a c h i e v e d i n c r e m e n t a l l y b y a p r o g r e s s i v e s e r i e s o f p a s s e s (s e e D e p t h a n d P a t t e r n s o f M o v e m e n t , b e l o w ) ; w h i l e f o r P h a s e 2 , t h e f u l l o p e r a t i n g d e p t h o f t h e de e p s u b s o i l e r i s a p p l i e d f r o m t h e b e g i n n i n g . Th e o p e r a t i n g s p e e d f o r p u l l i n g b o t h t y p e s o f im p l e m e n t s h o u l d n o t e x c e e d 2 t o 3 m p h . A t th i s s l o w a n d m a n a g e d r a t e o f o p e r a t i n g s p e e d , ma x i m u m f u n c t i o n a l p e r f o r m a n c e i s s u s t a i n e d by t h e t r a c t o r a n d t h e i m p l e m e n t p e r f o r m i n g t h e so i l f r a c t u r i n g . R e f e r r i n g t o F i g u r e 8 , t h e im p l e m e n t i s t h e 6 - l e g v e r s i o n o f t h e d e e p an g l e d - l e g s u b s o i l e r . I t s t w o o u t s i d e l e g s a r e “c h a i n e d u p ” s o t h a t o n l y f o u r l e g s w i l l b e en g a g e d ( a t t h e m a x i m u m d e p t h ) , r e q u i r i n g n o le s s t h a n 1 6 0 h p , ( r a t h e r t h a n 2 4 0 h p ) o f p u l l . Th e 4 - w h e e l d r i v e , a r t i c u l a t e d - f r a m e t r a c t o r i n Fi g u r e 8 i s 1 7 4 h p . I t w i l l b e d e c o m p a c t i n g t h i s un o b s t r u c t e d , f o r m e r c o n s t r u c t i o n a c c e s s a r e a si m u l t a n e o u s l y t h r o u g h 1 1 i n c h e s o f r e p l a c e d to p s o i l a n d t h e u p p e r 1 2 i n c h e s o f t h e pr e v i o u s l y d e e p - r i p p e d s u b s o i l . I n c o n s t r i c t e d ar e a s o f P h a s e 1 ) D e e p R i p p i n g , a m e d i u m - s i z e tr a c t o r w i t h a d e q u a t e h p , s u c h a s t h e o n e i n Fi g u r e 9 p u l l i n g a 3 - s h a n k d e e p r i p p e r , m a y b e mo r e m a n e u v e r a b l e . So m e i n d u s t r i a l - g r a d e v a r i a t i o n s o f r i p p i n g im p l e m e n t s a r e a t t a c h e d t o p o w e r g r a d e r s a n d bu l l d o z e r s . A l t h o u g h h i g h l y d u r a b l e , t h e y a r e ge n e r a l l y n o t r e c o m m e n d e d . T y p i c a l l y , t h e sh a n k s o r “ t e e t h ” o f t h e s e r i p p e r s a r e t o o s h o r t an d s t o u t ; a n d t h e y a r e m o u n t e d t o o f a r a p a r t t o ac h i e v e t h e w e l l - d i s t r i b u t e d t y p e o f l a t e r a l a n d ve r t i c a l f r a c t u r i n g o f t h e s o i l m a t e r i a l s ne c e s s a r y t o r e s t o r e s o i l p e r m e a b i l i t y a n d in f i l t r a t i o n . I n a d d i t i o n , t h e p o w e r g r a d e r s a n d bu l l d o z e r s , a s p u l l e r s , a r e f a r l e s s m a n e u v e r a b l e fo r t u r n s a n d p a t t e r n s t h a n t h e t r a c t o r . Fi g . 9 . T h i s m e d i u m t r a c t o r i s p u l l i n g a 3 - sh a n k d e e p r i p p e r . T h e s e v e r e l y c o m p a c t e d co n s t r u c t i o n a c c e s s c o r r i d o r i s n a r r o w , a n d t h e 12 0 h p t r a c t o r i s m o r e m a n e u v e r a b l e f o r P h a s e 1 d e e p r i p p i n g ( s u b s o i l f r a c t u r i n g ) , h e r e . 8 De p t h a n d P a t t e r n s o f M o v e m e n t As p r e v i o u s l y n o t e d b o t h P h a s e 1 D e e p R i p p i n g t h r o u g h s i g n i f i c a n t l y c o m p r e s s e d , e x p o s e d s u b s o i l an d P h a s e 2 D e c o m p a c t i o n ( d e e p s u b s o i l i n g ) t h r o u g h t h e r e p l a c e d t o p s o i l a n d u p p e r s u b s o i l n e e d to b e p e r f o r m e d a t m a x i m u m c a p a b l e d e p t h o f e a c h i m p l e m e n t . W i t h a n i m p l e m e n t ’ s g u i d e w h e e l s at t a c h e d , s o m e h a v e a “ n o r m a l ” m a x i m u m o p e r a t i n g d e p t h o f 1 8 i n c h e s , w h i l e o t h e r s m a y g o de e p e r . I n m a n y s i t u a t i o n s , h o w e v e r , t h e t r a c t o r / i m p l e m e n t o p e r a t o r m u s t f i r s t r e m o v e t h e g u i d e wh e e l s a n d o t h e r n o n e s s e n t i a l e l e m e n t s f r o m t h e i m p l e m e n t . T h i s a d a p t s t h e r i p p e r o r t h e d e e p su b s o i l e r f o r s k i l l f u l p u l l i n g w i t h i t s f r a m e o n l y a f e w i n c h e s a b o v e s u r f a c e , w h i l e t h e s h a n k s o r le g s , f r a c t u r e t h e s o i l m a t e r i a l 2 0 - t o - 2 4 i n c h e s d e e p . Th e r e m a y b e c o n s t r u c t i o n s i t e s w h e r e t h e d e p t h o f t h e e x p o s e d s u b s o i l ’ s c o m p r e s s i o n i s m o d e r a t e , e. g . : 1 2 i n c h e s , r a t h e r t h a n d e e p . T h i s c a n b e v e r i f i e d b y u s i n g a ¾ i n c h c o n e p e n e t r o m e t e r a n d a sh o v e l t o t e s t t h e s u b s o i l f o r i t s l e v e l o f c o m p a c t i o n , i n c r e m e n t a l l y , e v e r y t h r e e i n c h e s o f in c r e a s i n g d e p t h . O n c e t h e f u l l t h i c k n e s s o f t h e s u b s o i l ’ s c o m p a c t e d z o n e i s f i n a l l y “ p i e c e d ” a n d th e r e i s a s i g n i f i c a n t d r o p i n t h e p s i m e a s u r e m e n t s o f t h e s o i l p e n e t r o m e t e r , t h e d e p t h / t h i c k n e s s o f co m p a c t i o n i s d e t e r m i n e d . T h i s i s r e p e a t e d a t s e v e r a l r e p r e s e n t a t i v e l o c a t i o n s o f t h e c o n s t r u c t i o n si t e . I f t h e t h i c k n e s s o f t h e s i t e ’ s s u b s o i l c o m p a c ti o n i s v e r i f i e d a s , f o r e x a m p l e , t e n i n c h e s , t h e n th e P h a s e 1 D e e p R i p p i n g c a n b e c o r r e s p o n d i n g l y r e d u c e d t o t h e i m p l e m e n t ’ s m i n i m u m o p e r a b l e de p t h o f 1 2 i n c h e s . H o w e v e r , t h e P h a s e 2 s i m u l t a n e o u s D e c o m p a t i o n ( s u b s o i l i n g ) o f a n 1 1 i n c h th i c k l a y e r o f r e p l a c e d t o p s o i l a n d t h e u p p e r s u b s o i l s h o u l d r u n a t t h e s u b s o i l i n g i m p l e m e n t s f u l l op e r a t i n g d e p t h . Ty p i c a l l y , t h r e e s e p a r a t e s e r i e s ( p a t t e r n s ) a r e u s e d f o r b o t h t h e P h a s e 1 D e e p R i p p i n g a n d t h e Ph a s e 2 D e c o m p a c t i o n o n s i g n i f i c a n t l y c o m p a c t e d s i t e s . F o r P h a s e 1 , e a c h s e r i e s b e g i n s w i t h a mo d e r a t e d e p t h o f r i p a n d , b y r e p e a t - p a s s , c o n t i n u e s u n t i l f u l l d e p t h i s r e a c h e d . P h a s e 2 a p p l i e s t h e fu l l d e p t h o f D e c o m p a t i o n ( s u b s o i l i n g ) , f r o m t h e b e g i n n i n g . Ev e r y s e p a r a t e s e r i e s ( p a t t e r n ) c o n s i s t s o f p a r a l l e l , f o r w a r d - a n d - r e t u r n r u n s , w i t h e a c h p r o g r e s s i v e Fi g . 1 1 . A r e p e a t r u n o f t h e 3 - s h a n k r i p p e r al o n g t h e s a m e p a t t e r n e d p a s s a r e a a s F i g . 9 ; he r e , i n c r e m e n t a l l y r e a c h i n g 1 8 o f t h e n e e d e d 22 i n c h e s o f s u b s o i l f r a c t u r e . Fi g . 1 0 . A n e a r l y p a s s w i t h a 3 - s h a n k d e e p ri p p e r p e n e t r a t i n g o n l y 8 i n c h e s i n t o t h i s wo r k s i t e ’ s s e v e r e l y c o m p r e s s e d s u b s o i l . 9 pa s s o f t h e i m p l e m e n t ’ s l e g s o r s h a n k s e v e n l y s t a g g e r e d b e t w e e n t h o s e f r o m t h e p r e v i o u s p a s s . Th i s c o m p e n s a t e s f o r t h e s h a n k o r l e g - s p a c i n g o n t h e i m p l e m e n t , e . g . , w i t h 2 4 - t o - 3 0 i n c h e s be t w e e n e a c h s h a n k o r l e g . T h e s t a g g e r e d r e t u r n p a s s e n s u r e s l a t e r a l a n d v e r t i c a l f r a c t u r i n g ac t u a t e d e v e r y 1 2 t o 1 5 i n c h e s a c r o s s t h e d e n s e l y c o m p r e s s e d s o i l m a s s . La r g e , U n o b s t r u c t e d A r e a s Fo r l a r g e r e a s y a r e a s , u s e t h e s t a n d a r d p a t t e r n s o f m o v e m e n t : Ɣ T h e f i r s t s e r i e s ( p a t t e r n ) o f p a s s e s i s a p p l i e d l e n g t h w i s e , p a r a l l e l w i t h t h e l o n g e s t sp r e a d o f t h e s i t e ; g r a d u a l l y p r o g r e s s i n g a c r o s s t h e s i t e ’ s w i d t h , w i t h e a c h su c c e s s i v e p a s s . Ɣ T h e s e c o n d s e r i e s r u n s o b l i q u e l y , c r o s s i n g t h e f i r s t s e r i e s a t a n a n g l e o f ab o u t 4 5 d e g r e e s . Ɣ T h e t h i r d s e r i e s r u n s a t r i g h t a n g l e ( o r 9 0 d e g r e e s ) , t o t h e f i r s t s e r i e s t o c o m p l e t e th e f r a c t u r i n g a n d s h a t t e r i n g o n s e v e r e l y c o m p a c t e d s i t e s , a n d a v o i d l e a v i n g l a r g e un b r o k e n b l o c k s o f c o m p r e s s e d s o i l m a t e r i a l . ( I n c e r t a i n i n s t a n c e s , t h e t h i r d s e r i e s ma y b e o p t i o n a l , d e p e n d i n g o n h o w t h o r o u g h l y t h e f i r s t t w o s e r i e s l o o s e n t h e ma t e r i a l a n d e l i m i n a t e l a r g e c h u n k s / b l o c k s o f m a t e r i a l a s v e r i f i e d b y t e s t s w i t h a ¾ - in c h c o n e p e n e t r o m e t e r . ) Co r r i d o r s In l o n g c o r r i d o r s o f l i m i t e d w i d t h a n d l e s s m a n e u v e r a b i l i t y t h a n l a r g e r s i t e s , e . g . : a l o n g co m p a c t e d a r e a s u s e d a s t e m p o r a r y c o n s t r u c t i o n a c c e s s , a m o d i f i e d s e r i e s o f p a t t e r n p a s s e s ar e u s e d . Ɣ F i r s t , a p p l y t h e s a m e i n i t i a l l e n g t h w i s e , p a r a l l e l s e r i e s o f p a s s e s d e s c r i b e d a b o v e . Fi g . 1 2 . M o d e r a t e l y d r y t o p s o i l i s b e i n g re p l a c e d o n t h e a f f e c t e d s i t e n o w t h a t P h a s e 1 de e p r i p p i n g o f t h e c o m p r e s s e d s u b s o i l i s co m p l e t e . Fi g . 1 3 . T h e s a m e d e e p , a n g l e d - l e g s u b s o i l e r sh o w n i n F i g . 7 i s e n g a g e d a t m a x i m u m de p t h f o r P h a s e 2 , d e c o m p a c t i o n ( d e e p so i l i n g ) , o f t h e r e p l a c e d t o p s o i l a n d t h e u p p e r su b s o i l m a t e r i a l s . 10 Fi g . 1 5 . T h e s a m e s i t e a s F i g . 1 4 a f t e r d e e p ri p p i n g o f t h e e x p o s e d s u b s o i l , t o p s o i l re p l a c e m e n t , d e c o m p a c t i o n t h r o u g h t h e to p s o i l a n d u p p e r s u b s o i l a n d f i n a l s u r f a c e ti l l a g e a n d r e v e g e t a t i o n t o m a i n t a i n s o i l pe r m e a b i l i t y a n d i n f i l t r a t i o n . Ɣ A s e c o n d s e r i e s o f p a s s e s m a k e s a b r o a d “ S ” s h a p e d p a t t e r n o f r i p s , c o n t i n u a l l y an d g r a d u a l l y a l t e r n a t i n g t h e “ S ” c u r v e s b e t w e e n o p p o s i t e e d g e s i n s i d e t h e co m p a c t e d c o r r i d o r . Ɣ T h e t h i r d a n d f i n a l s e r i e s a g a i n u s e s t h e b r o a d , a l t e r n a t i n g S p a t t e r n , b u t i t i s “f l i p - f l o p p e d ” t o c o n t i n u a l l y c r o s s t h e p r e v i o u s S p a t t e r n a l o n g t h e c o r r i d o r ’ s ce n t e r l i n e . T h i s f i n a l s e r i e s o f t h e S p a t t e r n c u r v e s b a c k a l o n g t h e e d g e a r e a s sk i p p e d b y t h e s e c o n d s e r i e s . Ma i n t e n a n c e a n d C o s t On c e t h e t w o - p h a s e p r a c t i c e o f D e e p R i p p i n g a n d D e c o m p a t i o n i s c o m p l e t e d , t w o i t e m s a r e es s e n t i a l f o r m a i n t a i n i n g a s i t e ’ s s o i l p o r o s i t y a n d p e r m e a b i l i t y f o r i n f i l t r a t i o n . T h e y a r e : p l a n t i n g an d m a i n t a i n i n g t h e a p p r o p r i a t e g r o u n d c o v e r w i t h d e e p r o o t s t o m a i n t a i n t h e s o i l s t r u c t u r e ( s e e Fi g u r e 1 5 ) ; a n d k e e p i n g t h e s i t e f r e e o f t r a f f i c o r o t h e r w e i g h t l o a d s . No t e t h a t s i t e - s p e c i f i c c h o i c e o f a n a p p r o p r i a t e v e g e t a t i v e g r o u n d - c o v e r s e e d m i x , i n c l u d i n g t h e pr o p e r s e e d i n g r a t i o o f o n e o r m o r e p e r e n n i a l s p e c i e s w i t h a d e e p t a p r o o t s y s t e m a n d t h e p r o p e r am o u n t o f l i m e a n d s o i l n u t r i e n t s ( f e r t i l i z e r m i x ) a d a p t e d t o t h e s o i l - n e e d s , a r e b a s i c t o t h e f i n a l pr a c t i c e o f l a n d s c a p i n g , i . e : s u r f a c e t i l l a g e , s e e d i n g / p l a n t i n g / f e r t i l i z i n g a n d c u l t i - p a c k i n g o r mu l c h i n g i s a p p l i e d . T h e " m a i n t e n a n c e " o f a n e f f e c t i v e l y d e e p - r i p p e d a n d d e c o m p a c t e d a r e a i s ge n e r a l l y l i m i t e d t o t h e s u c c e s s f u l p e r e n n i a l ( l o n g - t e r m ) l a n d s c a p e g r o u n d c o v e r ; a s l o n g a s n o we i g h t - b e a r i n g f o r c e o f s o i l c o m p a c t i o n i s a p p l i e d . Fi g . 1 4 . T h e s e v e r e l y c o m p a c t e d s o i l o f a te m p o r a r y c o n s t r u c t i o n y a r d u s e d d a i l y b y he a v y e q u i p m e n t f o r f o u r m o n t h s ; s h o w n be f o r e d e e p r i p p i n g , t o p s o i l r e p l a c e m e n t , a n d de c o m p a c t i o n . 11 Th e D e e p R i p p i n g a n d D e c o m p a c t i o n p r a c t i c e i s , b y n e c e s s i t y , m o r e e x t e n s i v e t h a n p e r i o d i c su b s o i l i n g o f f a r m l a n d . T h e c o s t o f d e e p r i p p i n g a n d d e c o m p a c t i n g ( d e e p s u b s o i l i n g ) , w i l l v a r y ac c o r d i n g t o t h e d e p t h a n d s e v e r i t y o f s o i l - m a t e r i a l c o m p r e s s i o n a n d t h e r e l a t i v e a m o u n t o f tr a c t o r a n d i m p l e m e n t t i m e t h a t i s r e q u i r e d . I n s o m e i n s t a n c e s , d e p e n d i n g o n o p e n ma n e u v e r a b i l i t y , t w o - t o - t h r e e a c r e s o f c o m p a c t e d p r o j e c t a r e a m a y b e d e e p - r i p p e d i n o n e d a y . I n ot h e r s i t u a t i o n s o f m o r e s e v e r e c o m p a c t i o n a n d - o r l e s s m a n e u v e r a b i l i t y , a s l i t t l e a s o n e a c r e m a y be f u l l y r i p p e d i n a d a y . G e n e r a l l y , i f t h e P h a s e 1 ) D e e p R i p p i n g i s f u l l y e f f e c t i v e , t h e P h a s e 2 ) De c o m p a c t i o n s h o u l d b e c o m p l e t e d i n 2 / 3 t o 3 / 4 o f t h e t i m e r e q u i r e d f o r P h a s e 1 . Us i n g t h e e x a m p l e o f t w o a c r e s o f P h a s e 1 ) D e e p R i p p i n g i n o n e d a y , a t $ 1 8 0 0 p e r d a y , t h e n e t co s t i s $ 9 0 0 p e r a c r e . I f t h e P h a s e 2 ) D e c o m p a c t i n g o r d e e p s u b s o i l i n g t a k e s 3 / 4 t h e t i m e a s P h a s e 1, i t c o s t s $ 6 7 5 p e r a c r e f o r a c o m b i n e d t o t a l o f $ 1 5 7 5 p e r a c r e t o c o m p l e t e t h e p r a c t i c e ( t h e s e fi g u r e s d o n o t i n c l u d e t h e c o s t o f t h e s e p a r a t e p r a c t i c e o f t o p s o i l s t r i p p i n g a n d r e p l a c e m e n t ) . D u e to t h e m a n y v a r i a b l e s , i t m u s t b e r e c o g n i z e d t h a t c o s t w i l l b e d e t e r m i n e d b y t h e s p e c i f i c c o n d i t i o n s or c o n s t r a i n t s o f t h e s i t e a n d t h e a v a i l a b i l i t y o f p r o p e r e q u i p m e n t . 12 Re s o u r c e s Pu b l i c a t i o n s :ȱ ȣȱ Am e r i c a n ȱȱ So c i e t y ȱof ȱȱ Ag r i c u l t u r a l ȱEn g i n e e r s . ȱ19 7 1 . ȱȱCo m p a c t i o n ȱof ȱȱ Ag r i c u l t u r a l ȱȱ So i l s . ȱȱ AS A E . ȱ ȱȣȱ Br a d y , ȱN. C . , ȱan d ȱR. R . ȱWe i l . ȱ20 0 2 . ȱȱ Th e ȱȱ Na t u r e ȱȱ an d ȱȱ Pr o p e r t i e s ȱȱ of ȱȱ So i l s . ȱ13 th ȱed . ȱPe a r s o n ȱEd u c a t i o n , ȱIn c . ȱ ȱȣȱ Ba v e r , ȱL. D . ȱ19 4 8 . ȱSo i l ȱPh y s i c s . ȱJo h n ȱWi l e y ȱ&ȱSo n s . ȱ ȱȣȱ Ca r p a c h i , ȱN. ȱ 19 8 7 ȱ (1 9 9 5 ȱ fi f t h ȱ pr i n t i n g ) . ȱEx c a v a t i o n ȱ an d ȱ Gr a d i n g ȱ Ha n d b o o k , ȱ Re v i s e d . ȱȱ 2nd ȱed . ȱ Cr a f t s m a n ȱ Bo o k ȱ Co m p a n y ȱ ȣȱ El l i s , ȱB. ȱ(E d i t o r ) . ȱ19 9 7 . ȱȱ Sa f e ȱ&ȱEa s y ȱLa w n ȱCa r e : ȱȱ Th e ȱCo m p l e t e ȱGu i d e ȱto ȱOr g a n i c ȱLo w ȱMa i n t e n a n c e ȱLa w n . ȱȱ Ho u g h t o n ȱMi f f l i n . ȱ ȱȣȱ Ha r p s t e a d , ȱ M. I . , ȱ T. J . ȱ Sa u e r , ȱ an d ȱ W. F . ȱ Be n n e t t . ȱ 20 0 1 . ȱȱ So i l ȱ Sc i e n c e ȱ Si m p l i f i e d . ȱ 4th ȱ ed . ȱ Io w a ȱ St a t e ȱ Un i v e r s i t y ȱȱ Pr e s s . ȱ ȱȣȱ ȱ Ma g d o f f , ȱ F. , ȱȱ an d ȱȱ H. ȱ va n ȱ Es . ȱȱ 20 0 0 . ȱȱ Bu i l d i n g ȱ So i l s ȱȱ fo r ȱȱ Be t t e r ȱ Cr o p s . ȱ 2nd ȱ ed . ȱ Su s t a i n a b l e ȱ Ag r i c u l t u r a l ȱ Ne t w o r k s ȱ ȱȣȱ ȱ Mc C a r t h y , ȱD. F . ȱ19 9 3 . ȱEs s e n t i a l s ȱof ȱSo i l ȱMe c h a n i c s ȱan d ȱFo u n d a t i o n s , ȱBa s i c ȱGe o t e c h n i c s ȱ4th ȱed . ȱRe g e n t s / P r e n t i c e ȱ Ha l l . ȱ ȱȣȱ ȱ ȱ ȱ ȱ ȱ Pl a s t e r , ȱE. J . ȱ19 9 2 . ȱSo i l ȱSc i e n c e ȱ&ȱMa n a g e m e n t . ȱ3rd ȱed . ȱDe l m a r ȱPu b l i s h e r s . ȱ ȱȣȱ ȱ ȱ Un i o n ȱ Ga s ȱ Li m i t e d , ȱ On t a r i o , ȱ Ca n a d a . ȱ 19 8 4 . ȱ Re h a b i l i t a t i o n ȱ of ȱ Ag r i c u l t u r a l ȱ La n d s , ȱ Da w n ȬKe r w o o d ȱȱ Lo o p ȱȱ Pi p e l i n e ; ȱȱ ȱ Te c h n i c a l ȱȱ ȱ Re p o r t .ȱȱ ȱ Ec o l o g i c a l ȱȱ ȱ Se r v i c e s ȱȱ fo r ȱȱ Pl a n n i n g , ȱȱ Lt d . ; ȱ Ro b i n s o n , ȱ Me r r i t t ȱ &ȱDe v r i e s , ȱ Lt d . ȱan d ȱSm i t h , ȱHo f f m a n ȱAs s o c i a t e s , ȱLt d . ȱ ȱȣȱ ȱ ȱ US ȱDe p a r t m e n t ȱof ȱAg r i c u l t u r e ȱin ȱco o p e r a t i o n ȱwi t h ȱCo r n e l l ȱUn i v e r s i t y ȱAg r i c u l t u r a l ȱEx p e r i m e n t ȱȱ St a t i o n . ȱȱ Va r i o u s ȱye a r s . ȱȱSo i l ȱȱ Su r v e y ȱof ȱȱ (v a r i o u s ȱna m e s ) ȱȱCo u n t y , ȱȱ Ne w ȱYo r k . ȱUS D A . ȱ ȱIn t e r n e t ȱAc c e s s : ȱ ȣȱ ȱ ȱ ȱ Ex a m p l e s ȱof ȱim p l e m e n t s : ȱȱ ȱVȬRi p p e r s . ȱȱ Ac c e s s ȱby ȱȱ in t e r n e t ȱse a r c h ȱof ȱJo h n ȱDe e r e ȱAg ȱȬ Ne w ȱEq u i p m e n t ȱȱ ȱ fo r ȱȱ 91 5 ȱȱ(l a r g e r Ȭfr a m e ȱmo d e l ) ȱȱVȬ Ri p p e ;ȱȱ an d , ȱȱ ȱ fo r ȱ91 3 ȱȱ (s m a l l e r Ȭfr a m e ȱmo d e l ) ȱVȬRi p p e r .ȱȱ De e p , ȱan g l e d Ȭle g ȱsu b s o i l e r . ȱȱ Ac c e s s ȱȱ by ȱȱ in t e r n e t ȱ se a r c h ȱȱ of : ȱBig h a m ȱȱ Br o t h e r s ȱSh e a r ȱBo l t ȱȱ Pa r a t i l l ȬSu b s o i l e r . ȱ ht t p : / / s a l e s m a n u a l . d e e r e . c o m / s a l e s / s a l e sm a n u a l / e n _ N A / p r i m a r y _ t i l l a g e / 2 0 0 8 / f e a t u r e/ r i p p e r s / 9 1 5 v _ p a t t e r n _ f r a m e . h t m l ? s b u = a g& l i n k = p r o d c a t La s t ȱvi s i t e d ȱMa r c h ȱ08 . ȱ ȱȣȱ So i l s ȱ da t a ȱ of ȱ US D A ȱ Na t u r a l ȱ Re s o u r c e s ȱ Co n s e r v a t i o n ȱ Se r v i c e . ȱ NR C S ȱ We b ȱ So i l ȱ Su r v e y . ȱȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ht t p : / / w e b s o i l s u r v e y . n r c s . u s d a . g o v / a p p / ȱȱ ȱ an d ȱȱUS D A ȬNR C S ȱȱ Of f i c i a l ȱȱ So i l ȱȱ Se r i e s ȱDe s c r i p t i o n s ; ȱ Vi e w ȱby ȱ Na m e . ȱht t p : / / o r t h o . f t w . n r c s . u s d a . g o v / c g i Ȭbi n / o s d / o s d n a m e . c g i ȱ.ȱLa s t ȱvi s i t e d ȱJa n . ȱ08 . ȱ ȱȣȱ ȱ So i l ȱȱ pe n e t r o m e t e r ȱȱ in f o r m a t i o n . ȱȱ Ac c e s s ȱȱ by ȱȱ ȱ in t e r n e t ȱȱ se a r c h e s ȱȱ of : ȱȱ ȱ Di a g n o s i n g ȱSo i l ȱCo m p a c t i o n ȱȱ ȱ us i n g ȱȱ aȱ Pe n e t r o m e t e r ȱ(s o i l ȱco m p a c t i o n ȱte s t e r ) , ȱPS U ȱEx t e n s i o n ; ȱȱ as ȱȱ we l l ȱȱ as ȱDi c k e y Ȭjo h n ȱSo i l ȱCo m p a c t i o n ȱTe s t e r .ȱ ht t p : / / w w w . d i c k e y - j o h n p r o d u c t s . c o m / p d f / S o i l C o m p a c t i o n T e s t . p d f a n d ht t p : / / c r o p s o i l . p s u . e d u / E x t e n s i o n / F a c t s / u c 1 7 8 p d f La s t ȱ vi s i t e d ȱSe p t . ȱ07 ȱ